i had a plan last night to switch to ubuntu ->the plan went wrong , like always i backed up everything , formatted the drive , booted ubuntu live cd explored a bit then decided to install , the installation would go to about 45 then it would say error five check that the cd is clean ! i made another cd , also tried , same problem . going back to windows . but as a review for the new karmic koala i would say improvement in the graphics zone no pidgin any more but a new crappy empathy im client the new open office which is super great wine does not come pre installed nor it is supported by canonical any more . im typing this from a liveboot of ubuntu since my system has no OS yet on the HDD :P
Oh I see, I wonder what the source of the error could be. Btw yesterday I was sending you messages on msn and it looks like you didn't receive any. It looks like there is some sort of compatibility problem between WLM and empathy. Btw you could have downloaded pidgin and tried it anyways. Btw did it tell you make sure that the cd or disk is clean? Maybe it meant that something is wrong with your hard drive. Are you sure you formated your HDD to ext3 file system instead of NTFS?

Other than that, make sure you burn the iso at the lowest speed possible and that you should have checked the md5sum before downloading your iso(https://help.ubuntu.com/community/HowToMD5SUM). btw check out this thread as it has a possible solution which is adding stanza to menu.lst http://ubuntuforums.org/showthread.php?t=1295714

Hope this helps, good luck and don't give up that quickly :P
Check the md5sum. That's most probably it. If they don't match, download the iso again. Or try to get in touch with the Ubuntu-lb guys, they'll give you a proper install CD.

Empathy is OK, we all love the pidgin, but empathy has video support. Wine was never supported by Canonical or bundled in Ubuntu. Actually, I'm kinda glad it isn't.
i sorted out the problem , i installed it throe windows its a new option . but im still having a lot of trouble . for example web-pages are not showing up correctly like Google images shows up only with no images :P i thought it was kind off a java-script thing i could not know , im not an experienced ubuntu user . also mp3 support i couldn't do anything about that .
Didn't you download the mp3 codecs? But mp3 is supposed to work out of the box in Ubuntu once it is able to detect your sound card. I have ubuntu 8.10 which is relatively old and I was able to play mp3 files easily.
mp3 don't run out of the box on Ubuntu, they're a proprietary format. Yet you can easily install them. Just double-click on any mp3 file, and Ubuntu will ask to install the proper codecs automatically. For those interested, Linux Mint is a distro based on Ubuntu that comes bundled with proprietary codecs. I think the version 7 (Gloria) is out.
rahmu wroteJust double-click on any mp3 file, and Ubuntu will ask to install the proper codecs automatically.
did not work
Ok try to install ubuntu-restricted-extras. You can either do this using Synaptic, or type this in the command line:
sudo apt-get install ubuntu-restricted-extras
.

This should do it.
jadberro@ubuntu:~$ sudo apt-get install ubuntu-restricted-extras
[sudo] password for jadberro: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Couldn't find package ubuntu-restricted-extras
this is what i get when i do this i already tried :(
Can you show the output of

cat /etc/apt/sources.list
just for the heck of it, try:
sudo apt-get update
ok guys will do
Before installing the restricted extras using
 sudo apt-get install ubuntu-restricted-extras
do an update using
sudo aptitude update
It worked for me, good luck :)
Try not to mix apt-get and aptitude, it's bad practice. You can use apt-get update or aptitude install, but don't mix both tools on your system.

And I don't think this is jad's problem because Ubuntu is schedule to update the list automatically. But it's worth trying.

My guess is that the multiverse repository is not enabled. You can enable it by editing the conf file /etc/apt/sources.list or using System>Administration>Software Sources.

Jad if you have troubles doing it, just paste the output of the cat /etc/apt/sources.list command I'll tell you how to do it.
rahmu now i lost all network connectivity there ! :( i don't know how i lost them and l don't know how to get them back ! :( can you help ?
show the output of

$ifconfig
jadberro@ubuntu:~$ sudo $ifconfig
usage: sudo [-n] -h | -K | -k | -L | -V | -v
usage: sudo -l[l] [-AnS] [-g groupname|#gid] [-U username] [-u username|#uid]
[-g groupname|#gid] [command]
usage: sudo [-AbEHnPS] [-C fd] [-g groupname|#gid] [-p prompt] [-u
username|#uid] [-g groupname|#gid] [VAR=value] [-i|-s] [<command>]
usage: sudo -e [-AnS] [-C fd] [-g groupname|#gid] [-p prompt] [-u
username|#uid] file ...
without the sudo.

just type ifconfig.
rahmu my problem is that at first when i put ubuntu i had wired connection set up normally from dhcp , i even configured it for pppoe by
sudo pppoeconf
and worked fine
about two days ago i lost wired and its now saying
wired connection not managed
A friend of mine had similar problem working with pppoeconf. Apparently there's a problem with karmic. Can you show me the content of /etc/network/interfaces?

(just type cat /etc/network/interfaces)