2.6.8 freezing over night
FYI -
I'm seeing the same issue I saw with earlier 2.6.8rcs on a quad Opteron. When left running over night with moderate background load (some build jobs) it freezes. No sysrq or ping or anything, also no oops one the console. The machine ran previously only 2.6.5 based kernels which worked fine.
-Andi