Okay I've tried to play WoW on Ubuntu for a while now.
It worked fine the first time, but now
when enter the game on a character the freeze after a couple of seconds and I must reboot my computer.

I followed http://ubuntuforums.org/showthread.php?t=312482

The only part I didn't manage was this
Now make a file with a text editor in /etc called ld.so.conf, that contains a single line specifying a directory: /usr/local/lib. after this, while in root, run ldconfig.

At this point you will want to run wine to make your fake C:\ drive.

Now we need some dll's and the mozzila active x control dowload them here
msvcp60 :http://www.dll-files.com/dllindex/dl....shtml?msvcp60
mfc42: http://www.dll-files.com/dllindex/dll-files.shtml?mfc42
mozzila active x: http://prdownloads.sourceforge.net/w...2.exe?download

Now we can put the .dll files in the system folder:

mv msvcp60.dll mfc42 ~/.wine/drive_c/windows/system32/