I've had an ongoing problem with my computer ever since I purchased it in 2008. Every once in a while, mostly under high load, the computer would freeze. I couldn't find anything in the logs regarding the lock up, and the problem persisted through multiple versions of Ubuntu, so I assumed it was a hardware and not a software problem.
The processor is an AMD Phenom 9850 and the motherboard an Asus M3N-HD HDMI.
I have been compiling the Chromium OS image, or trying to, for the last few weeks. I have been successful a few times, but nearly every time the machine would freeze.