Re: Crashing when SMP enabled
I had the same sort of thing in both suse and ubuntu...turns out some motherboards have problems with SMP (specifically the irqbalancer). If you have smp enabled with irqbalance running, try turning that off, it worked for me, and now I have a 100% stable system. This was supposed to be fixed in 2.6.17.
Also try turning off the composite setting if you have it enabled in the xorg.conf file, that also was a major point of instability for me.