IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 17 May 2011   (all times are UTC)

00:03
<nitin>
alkisg : yes
00:03
<alkisg>
nitin: the pxe protocol which is embedded in your NIC ROMs requires tftp
00:03
<nitin>
is it possible.....becasue tftp port 69 is udp ,,,,,,it is unsecure
00:03
<alkisg>
So in order to boot without tftp, you'd need to boot from a disk
00:03
(floppy, cd, hard disk, usb stick etc)
00:03scanf (scanf@unaffiliated/scanf) left #ltsp ("Leaving").
00:04
<alkisg>
If you're willing to do that, then yes, it's possible
00:04
You put a software called ipxe (etherboot) locally and that then loads the kernel over http or whatever else you want.
00:04
But what do you mean "unsecure"?
00:05
The kernel is public, you shouldn't mind if others get access to it
00:05
<nitin>
k but what are the setting i need to do in ltsp configuration...for hardisk boot or whatever
00:05
<alkisg>
Here is all the required info: http://ipxe.org/
00:06
There's nothing LTSP related there, you use whatever method ipxe uses
00:06
But I'm afraid you're doing that for the wrong reasons
00:07
<nitin>
alkisg : not actually ....what i am doing ...i am booting my client through pxe in kiosk mode and client is booting perfectlly
00:07
<alkisg>
What I don't understand is this statement that you said: "tftp is not secure"
00:07
<nitin>
alkisg : but in the same vlan or subnet ....if i boot my client in other vlan or subnet it is not getting booting
00:08
it is udp port that 's y i said ....
00:08
<alkisg>
[23:03] *** [nitin] can we change tftp port 69 to other because it is the udp port .....and we can't open it for our comapny for security purpose
00:08
How is security related to udp?
00:08
<nitin>
in our company udp port is disable bydefault
00:08
<alkisg>
Why?
00:09
I'm asking because I think your best option is to tell your network administrators to open the tftp port
00:09
<nitin>
in udp port any body can access it ...virus problem ...that every thing i asked to our network team ...they are saying like this
00:09
<alkisg>
UDP is a protocol like TCP
00:10
It's not related to access or viruses at all
00:10
If they're saying that, tell your manager to fire them :)
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00:12
<nitin>
alkisg : k dear let me know if i open this port for my ltsp server .....please tell me there will not be any problem
00:12
<alkisg>
You mean problem with viruses?
00:12
I never heard of viruses that target tftp servers
00:13
<nitin>
k
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00:26
<Hyperbyte>
nitin: you could always ask them to open UDP 69 for your LTSP server only
00:26
But since the UDP port would only need to be opened on the internal network, and not to the external world, I honestly don't see how this could possibly be a security problem.
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03:16
<andygraybeal>
morrnnnining
03:20
<Hyperbyte>
helllhelllellloo
03:20
:-D
03:25
<andygraybeal>
hi Hyperbyte :)
03:27
i'm re-racking equipment
03:27
i probably won't be online for long gotta take it all down
03:28
adding new stuff, re-arranging, and making the posts a little deeper
03:29
okay ... going down
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05:40
<vlt>
Hello. I'm an LTSP user (on ubuntu) for several years now. After an upgrade to Ubuntu's latest LTS release it's nearly impossible to work; everything feels really slow. Any idea what could be the problem here? Do I need "thick" clients nowadays?
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07:34
<alkisg>
vlt: did you put LDM_DIRECTX=True in lts.conf? And, how much RAM does your client have?
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08:26
<zarrku>
I am having a problem with the number of thin clients I am able to have running at one time.
08:26
I have the required memory to run the amount of thin clients I am trying to run. 100 thin clients ( 22gb orf ram )
08:27
However, after so many thin clients are booted, someone will try to log-in and will just get a black screen with a mouse cursor.
08:27
When a different thin client logs out, the thin client that had the black screen and a mouse cursor will then show a desktop.
08:27
Can you tell me what is wrong?
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08:28
<zarrku>
It starts doing this after about 55 thin clients boot
08:33shawnp0wers (~Adium@linuxjournal/staff/shawnp0wers) joined #ltsp.
08:33
<shawnp0wers>
Ok, whomever is responsible for the LDM_PRINTER_LIST and LDM_PRINTER_DEFAULT variables in lts.conf  I think I love you. :)
08:43
<zarrku>
is anyone here that is helping ltsp?
08:44
<shawnp0wers>
zarrku: Most people here, when they have time. Leave a question, and if anyone can help, they will.
08:44
<zarrku>
I know
08:45
chatrooms are like that
08:45
has lots of exp. with that, heh
08:45
but, thanks
08:46
<muppis>
zarrku, have you looked servers load when that happens?
08:46
<zarrku>
yep
08:46
just a drop in the bucket
08:47
<muppis>
How about i/O wait?
08:48
<zarrku>
System uptime 5 days, 22 hours, 02 minutes Running processes 3146 CPU load averages 2.15 (1 min) 2.10 (5 mins) 2.15 (15 mins) CPU usage 32% user, 34% kernel, 1% IO, 33% idle Real memory 15.69 GB total, 9.75 GB used
08:49
<muppis>
Not bad.
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08:50
<zarrku>
I can't figure it out
08:50
it shouldn't have a problem
08:50
but it does
08:52
to me, it looks like there is a finite user limit, but according to documentation user limit is based on how much memeory you have
08:52
memory
08:52
<muppis>
How abou networking?
08:53
+t
08:53
<zarrku>
the load
08:54
we have cisco stack of 8 switchs
08:54
their gigabyte switches
08:55
according to the server stack commander, it 78 percent idle
08:56
<muppis>
Then I'm out of ideas.
08:56
<zarrku>
I found one article
08:57
but I'm not sure it is correct
08:57
http://ubuntuforums.org/showthread.php?t=694512
08:59
<muppis>
I think, if it works after someone logs out.
08:59
I think not...
09:05
<zarrku>
me too
09:06
guess its time to pay the piper at disklessworkstations
09:06
thanks
09:07
<muppis>
No problem.
09:08
<abeehc>
weird stuff
09:10
gnome desktops?
09:10
<zarrku>
yes
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09:25
<abeehc>
from time to time i see black desktops from dbus getting really annoyed
09:25
i imagine .xsession-errors has nothing interesting on the client that won't login?
09:26
<dead_root>
zarrku what OS are you using
09:27
<shawnp0wers>
Question: Is iTalc stable and usable for 10.04 thin clients? I've never set it up, and can't find any current documentation on making it work. Perhaps iTalc is no longer the "thing" to set up?
09:28
<zarrku>
Edubuntu 10.10
09:29
<dead_root>
do you mind doing an iostat
09:29
and am curious your hard drive util with that many users
09:30
<zarrku>
what command are looking for
09:31
<dead_root>
iostat -x
09:31
you may need to apt-get sysstat
09:32
<abeehc>
zarrku: auth.log contains nothing interesting on the server? seems like pam has the ability to enforce sucha limit
09:32
something like man limits.conf
09:35
<dead_root>
usually /etc/security/limits.conf is all commented out on standard ubuntu
09:35
<abeehc>
agreed any out of the box limit would strike me as strange
09:35
<dead_root>
but abeehc might have a point and Edubuntu does something different
09:35
idk i have never used Edubuntu
09:36
it is weird though the blank session starts working when one user logs out
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09:43
<zarrku>
the limits.cnf is commented out
09:50
<abeehc>
i got nothin really
09:52
<zarrku>
what is NBD_swap
09:56
<abeehc>
way to provide clients with more memory with server hd space?
09:56
has something changed to cause this problem? did it ever work as expected?
09:57
is the max amount of cliernts a consistent number before it stops others from logging in?
09:57
<shawnp0wers>
zarrku: yes, it adds swap for the thin client, but stores it on the server
09:57
<abeehc>
http://www.cyberciti.biz/faq/linux-increase-the-maximum-number-of-open-files/
09:57
<shawnp0wers>
you need to add a line to /etc/hosts.allow though in order for it to work (NBD_SWAP)
09:58
<abeehc>
i'd wonder if somehow you are hitting that type of limit
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10:34
<zarrku>
hello alkisg
10:34
<alkisg>
Hi
10:35
<zarrku>
I'm having unqiue problem with my thin clients
10:36
it seems after about 55 thin clients boot
10:36
that the next thin client will boot witha black screen and a mouse cusor
10:36
cursor
10:37
but with no desktop
10:37
<alkisg>
Check your syslog, if it's a daemon limitation you should see an error
10:37
E.g. it could be the dbus file limit that was reported recently
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10:38
<zarrku>
if a user logs out, then the user with black screen and mouse cursor will get a desktop
10:38
okay
10:39
ay 17 13:22:27 GBLINUX ldminfod[34809]: connect from 192.168.0.37 (192.168.0.37) May 17 13:22:34 GBLINUX nbdrootd[34939]: connect from 192.168.0.37 (192.168.0.37) May 17 13:22:34 GBLINUX nbd_server[34941]: connect from 192.168.0.37, assigned file is /opt/ltsp/images/i386.img May 17 13:22:34 GBLINUX nbd_server[34941]: Size of exported file/device is 579198976
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10:40
<zarrku>
May 17 13:22:34 GBLINUX nbd_server[34941]: Disconnect request received.
10:41
<alkisg>
https://bugs.launchpad.net/ubuntu/+source/dbus/+bug/381063
10:42
<zarrku>
thats it
10:42
I know it is
10:42
Thank you
10:42
hehe
10:42
ltsp has no limit users right
10:42
as long you have the memory to support it
10:43
correct
10:44
<alkisg>
LTSP is just a wrapper for other software. So any limits wouldn't be LTSP related, but "other-software" related
10:44
E.g. tcpd limits, sshd limits, ulimits etc
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10:51
<zarrku>
so i need to update the dbus
10:54
<alkisg>
No, just to edit a config file
10:54
*If* that's the bug that affects you
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11:20
<zarrku>
that article says this problem was fixed with dbus 1.4.6
11:21
It is possible to just update the dbus to 1.4.6
11:21
without trying to edit the dbus.conf file
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11:45
<alkisg>
zarrku: you can ask that question in #ubuntu, the dbus problem has nothing to do with ltsp...
11:46
<shawnp0wers>
alkisg: Your name keeps turning up in my Google searches on iTalc  can you verify, does it work with Ubuntu 10.04 and thin clients?
11:47
I don't see any documentation for 10.04, but I'm willing to poke around if it's worth it.
11:47
<alkisg>
Nope, I can't, I gave up on it before 10.04
11:47
It should be working but I haven't tested it
11:47
<shawnp0wers>
Fair enough. Thanks.
11:47
<alkisg>
It crashed way too much for me, so we abandoned it and developed our own solution
11:47* shawnp0wers raises an eyebrow
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11:47
<shawnp0wers>
Your own solution?
11:48
For remote controlling screens? Or soemthing else?
11:49
I might just see if I can figure out how to start VNC server in the chroot  all I want is to be able to control a screen if need be.
11:49
I don't really care about demonstrations, etc.
11:50
<alkisg>
For classroom management, lots more than just remote control, see some screenshots here: http://wiki.ubuntu-gr.org/sch-scripts/screenshots
11:50
You can start a vnc on thin clients whenever you want, as long as you're root and the user is logged on
11:50
Other than that, you can also install x11vnc on the chroot etc
11:50
<Ghidorah>
Sorry to jump in... That is really awesome alkisg.
11:51
<shawnp0wers>
Very cool. And yes, alkisg  that looks very cool.
11:51
Is it a project you're planning to share at all?
11:51
<alkisg>
It's open source, some people translated it from greek to english and use it
11:51
We'll internationalize it for ubuntu 12.04 (or 14.04 if we don't have enough time)
11:52
And try to get it in the debian/ubuntu archives
11:54
<shawnp0wers>
That's really awesome looking. What's it called? (Or what is the English equivalent, so I can watch for it by name)
11:54
<alkisg>
sch-scripts (sch is short for school)
11:54
Really bad name :-/
11:54
<shawnp0wers>
ahh, cool
11:54
Still, looks like an amazing program.
11:55
<insert "it's all greek to me" joke here>
11:55
<alkisg>
It's very convenient, it allowed 250 schools here to switch to ubuntu/ltsp without help from sysadmin etc
11:55
haha
11:55
I admire dgroos for actually translating it from greek to english
11:55
We have an english deb if you want, let me get the link...
11:55
http://users.sch.gr/alkisg/tosteki/index.php?topic=3220.0
11:56
<shawnp0wers>
Awesome, thanks!
11:56
<Ghidorah>
Think it'd work on Ubuntu 11.04?
11:57
<alkisg>
Not sure, we're sticking to lts releases so I haven't tested it
11:57
Some people run it on 10.10, don't know about 11.04
11:58
<shawnp0wers>
Whoa, you can power off thin clients?
11:59
alkisg, I might totally owe you a beer
11:59
or eleven
12:00
<alkisg>
Sure, we even have a fixed gnome-session in our ppa so that poweroff works from inside the session too
12:00
So anyway, to start vnc inside a user session you can either (1) set a gconf key so that vino-server starts, or (2) read DISPLAY from the user /proc/pid/environ and run x11vnc on that display
12:01
<Ghidorah>
wow
12:01
shawnp0wers: I'm in the same boat as you.
12:01
<alkisg>
And of course you can always have x11vnc running in the chroot
12:01
We chose to have a sh daemon running in the chroot to save ram
12:02
<shawnp0wers>
alkisg: I'm going to try sch-scripts first, if I can get it working, I'll happily go with that method! :)
12:02
<alkisg>
OK :)
12:02
If you need help with that, ping me
12:03
<shawnp0wers>
I will. I really am excited now. :D
12:03
<Ghidorah>
shawnp0wers: are you doing LTSP-Cluster?
12:04
<shawnp0wers>
No, not currently. I tried, and stgraber was kind enough to help me  but it lacked some of the lts.conf settings I needed
12:04
So I am just using several servers, keeping the lts.conf files in sync manually
12:04* shawnp0wers shrugs  it works
12:04
<Ghidorah>
like what was missing?
12:05
<shawnp0wers>
I don't remember...
12:05
<Ghidorah>
k
12:05
<shawnp0wers>
It was last year about this time. :)
12:05
<Ghidorah>
I hear ya
12:05
I currently have 2 seperate servers
12:05
I'm trying to get cluster going
12:05
funny you mention lts.conf I was about to ping the room on when I would change settings at for it
12:06
<shawnp0wers>
If you have lts.conf questions, feel free to ask. I have a meeting right now, but I'm no where near the smartest person in the room anyway. ;)
12:06
see you all later
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12:13
<Gadi_eeepc>
mgariepy: ping
12:13
anybody around running Windows2008R2 and terminal services?
12:14
<Ghidorah>
I am
12:14
<Gadi_eeepc>
can you try redirecting 2 print queues at the same time through rdesktop and tell me if it works for you?
12:15
it is: "-r printer:queue1,queue2"
12:15
I think this is an rdesktop bug, but it is driving me nuts
12:15
<Ghidorah>
I will have to configure my LTSP to work with that TS. Can I get back to you?
12:16
<Gadi_eeepc>
can you run it from any old linux box?
12:16
<Ghidorah>
what version of rdesktop are you on?
12:16
<Gadi_eeepc>
I tried both 1.6 and 1.7
12:16
no joy
12:16
both just display queue1
12:17
when connecting to w2k8r2
12:17
while both queues show fine in w2k3
12:17
<Ghidorah>
oh that sucks
12:18
I'm configuring it now
12:19
<Gadi_eeepc>
thx
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12:42
<Lou_>
what is the command in th terminal to see how many users you have logged into thin clients
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12:45
<Gadi_eeepc>
try: "w"
12:59
<highvoltage>
hie hie hie hie hie
12:59
(sorry I can't help but think that when I see Gadi's nick :p)
13:00
(and I'm not laughing at him, just in case you don't know Gadi)
13:00
<Gadi_eeepc>
:)
13:00
hey, highvoltage, do you guys have a recent freerdp pkg in your ppa?
13:01
<highvoltage>
there was one uploaded on 2010-08-27, not sure how recent that would be
13:02
<Gadi_eeepc>
not recent enough
13:02
:)
13:02
<alkisg>
Gadi_eeepc: just install the one from oneiric
13:02
<vagrantc>
onorific
13:03
<highvoltage>
this one has a slightly newer one: https://launchpad.net/~llyzs/+archive/ppa
13:03
which version do you need?
13:05
<Gadi_eeepc>
it'd be nice if there was something from the recent git trunk
13:06
<alkisg>
http://packages.ubuntu.com/search?keywords=freerdp ==> 0.8.2-2build1
13:06
<Gadi_eeepc>
I am caught between bugs
13:06
:)
13:06
eww... bugs....
13:07
seems the bug Im after was fixed in December, 2010
13:07
in freerdp
13:07
and unfixed in rdesktop afaict
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13:09
<alkisg>
Then upload it to your ppa to make it available for others too :D
13:10
<Gadi_eeepc>
yes, dear
13:10
<alkisg>
https://launchpad.net/~gadi ===> hmm nope, not that :D
13:11
<abeehc>
rdesktop has some activity recently
13:11
http://sourceforge.net/projects/rdesktop/files/rdesktop/1.7.0/
13:11
<mgariepy>
abeehc, <Gadi_eeepc> I tried both 1.6 and 1.7
13:12
<alkisg>
New maintainer for rdesktop? Nice
13:12
<abeehc>
i saw that, mgariepy
13:12
i thought rdesktop was done forever but i think the people that did that old seemless patch took over
13:13
http://davelargo.blogspot.com/2011/04/road-to-seamless-windows.html
13:17
win2k8 ts printing improvements cost me at least a day or so with odd little things I found.. but our printing is backed by cups so never really done the queue redirection
13:21
<Gadi_eeepc>
im working on a project where a school will have ltsp+rdp serving up windows desktops from a central terminal server. I plan to use the printer redirection to make printer-per-classroom setup easier
13:22
it would be nice if redirecting more than one printer weren't broken
13:22
:)
13:24
<vagrantc>
who could possibly use two printers from one machine?
13:25
<Gadi_eeepc>
this is to limit the choice of printers
13:25
to those in the classroom
13:25
I dynamically create printer queues on the client
13:25
then redirect them
13:25
that way, the users only see the printers for the classroom from that client
13:26
similar to the hackery that ltsp-cluster guys did on the linux side
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13:30
<Gadi_eeepc>
hmm
13:31
I cant get the package to build
13:31
something about dpkg-gensymbols
13:31
*sigh*
13:41
13:42
<alkisg>
Gadi_eeepc: did you run apt-get build-dep and debuild -b -tc?
13:42
<Ghidorah>
Gadi: I'm having to fix my TS right now, I'll try it and see if it works for me
13:45
<Gadi_eeepc>
Ghidorah: thx
13:45
alkisg: I usually use dpkg-buildpackage
13:45
but, Ill try with debuild
13:50
same
13:51
<vagrantc>
both should fail earlier if you have unresolved build-dependencies
13:51
<alkisg>
I've sent it to launchpad, lets see how it goes there
13:55
<Gadi_eeepc>
wwhat did u send? the latest git?
13:55
or the oneric pkg?
13:55
<mistik1>
re
13:55
<alkisg>
Git
13:56
<Gadi_eeepc>
did you copy the debian dir from oneiric?
13:56
<Ghidorah>
Does anyone have any documentation on LTSP-Cluster and the lts.conf file?
13:56
<alkisg>
Gadi_eeepc: yup
13:56
https://launchpad.net/~ts.sch.gr/+archive/proposed/+sourcepub/1732644/+listing-archive-extra
13:56
<Gadi_eeepc>
Ghidorah: ltsp-cluster doesnt use the lts.conf file
13:56
<alkisg>
Just a quick upload, I didn't check anything
13:57
<Ghidorah>
so the list in the attribute drop down is all that there is as far as options go?
13:57
<Gadi_eeepc>
ah, no
13:57
you can add more
13:57
you know that python control-center.py <foo> step?
13:58
<Ghidorah>
Yes sir
13:58
<Gadi_eeepc>
modify <foo> and repeeat
13:58
<Ghidorah>
that adds attributes?
13:58
<Gadi_eeepc>
yup
13:58
<Ghidorah>
which I assume dynamically builds the lts conf?
13:58
or lts conf completely gone in cluster?
13:59
<Gadi_eeepc>
completely gone as a flat file
13:59
the client queries the control center
13:59
that sends it the attributes
13:59
<alkisg>
Failed to build. Log: https://launchpadlibrarian.net/71901417/buildlog_ubuntu-lucid-i386.freerdp_0.8.2-3~ppa1_FAILEDTOBUILD.txt.gz
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14:01
<Gadi_eeepc>
alkisg: thats different than what I get
14:01
<alkisg>
cp: cannot stat `debian/tmp/usr/bin': No such file or directory
14:01
<Gadi_eeepc>
I think I get further than that
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14:18
<Ghidorah>
Gadi_eeepc: Stupid question. With the control-center.py I would use modify parameter to add a new attribute?
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14:24
<Gadi_eeepc>
I just edit the text file
14:24
if a parameter is modified, I have found that I have to remove it and add it
14:24
so, I comment it out
14:24
run the script
14:25
uncomment it
14:25
run the script again
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14:33
<Ghidorah>
You don't happen to have a different file than what is on the howto do you?
14:37
<Gadi_eeepc>
what problem are you having?
14:41
<Ghidorah>
I'm trying to use LOCALDEV_DENY_FLOPPY = True
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14:44
<Ghidorah>
Gadi: Nevermind, I figured it out! Thanks for your help!
14:44
Also, I have a CAL issue with my Win2k8 TS. Can I test for your printing issue tmrw?
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14:49
<Gadi_eeepc>
sure
14:49
thx
14:50
<Ghidorah>
Do you think LTSP-Cluster is going to be as active with Stgraber moving on to Conical?
14:52
<Gadi_eeepc>
gotta ask the rev lnx guys here
14:52
<highvoltage>
"as active"
14:52
interesting way of putting it
14:54
stgraber is telling me he still has some pathes that he needs to commit, and he's using some parts for weblive
14:59
<Gadi_eeepc>
he's probably referring to the -ng
14:59
<Ghidorah>
-ng?
14:59
<Gadi_eeepc>
the next generation ltsp-cluster
15:00
stgraber was working on that
15:00
<Ghidorah>
oh nice
15:02
Anyhow thanks for your help today! I'm going home while I have the chance. Have a great night.
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<Gadi_eeepc>
mgariepy: still around?
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00:00--- Wed May 18 2011