I use ubuntu 12.10 32bit Gnome 3.6.0 with Unity GPU: Intel 3000 HD
In about this computer: Processor: Intel® Core™ i5-2410M CPU @ 2.30GHz × 4 GPU : Intel® Sandybridge Mobile x86/MMX/SSE2
Everything fine, except occasionally everything freezes (display, keyboard, mouse clicking actions) except the movement of the mouse (and I can observe it's movement). Before this problem occur I was having troubles with false X serv alerts.
I'm just asking if noone come up with solution, at least someone with my type of machine and my configurations (given up above) to run $uname -r and tell me the Kernel version. (Of course if he doesn't have these kind of problems)