Comment 9 for bug 337351

9.04 Kubuntu release with all updates as of 2009/05/05. Upgrade from Kubuntu 8.04. System freezes (no IRQs accepted = no mouse movement, no keyboard indicator changes) periodically.

EXT3 filesystem for both separate "/" and "/home". IBM T60 laptop with 4GB RAM, ATI X1300, iwl3645 wifi, T2400 CPU. Has happened while I'm on applications, switching between applications, and even when I'm turned away from the PC to answer a phone call (turn back, all frozen).

My problem so far seems most likely related to overheating: when I boot back up, my CPUs are always above 60C - they never ran that hot under 8.04, so I'm hunting down what's changed with power management, even though I have a cpufreqd setting for "avoid overheating", but that doesn't appear to be taking affect, since it locks the processors at 1GHz, and they're not being locked.