Quote Originally Posted by f0x_ View Post
It's not a cooling problem. In my opinion there's a bug related to (compiz, kde desktop effects) acceleration. I don't know how to file a bug report cause the freeze can't make me switch to console.
It might be a cooling problem - it's because desktop effects use more of the GPU power all the time. In my case after running for few hours KDE4 with desktop effects and now I start Nexuiz I can get freeze after few seconds (sometimes I can do SysRQ sometimes not) but when I just start my computer and then start Nexuiz I can play the game without problems for few hours. One time I've noticed image dissortion in Firefox and some minutes later a freeze.