glitch on the fourth desktop

opensuse 13.1 kde4.11.5 nvidia drivers 304.119 GPU NVS 3100M
after some hour of use usually the fourth, rarely others, desktop glitch as in figure:
and others glitchs in the taskmanager.
in opensuse 12.3 doesn’t happen.
any way to solve???
manythanks :slight_smile: ciao :slight_smile: pier

The fact that it runs for a significant time then glitches point to possible heating problems maybe. It could be a memory leak I guess but if it was a general problem others would be seeing it. Check your fans and clean out any gunk in the machine