So, this was ironic. I’ve been having trouble with Edgy ever since I installed it. In particular, my CPU will hang and get very hot, eventually causing my computer to automatically shut down. Following a conversation on IRC, I decided to see if a fresh install of Ubuntu would fix my problems. So, I downloaded and burnt an Edgy CD, then installed it. I keep /home on a separate partition, so I didn’t lose anything important. Once I got back into Edgy, I started rebuilding some of the packages that I had custom-built on my previous installation. After the CPU had been runnning at nearly full speed for a couple of hours, I remarked on IRC:

hey, this fresh install seems to have fixed my cpu problems *knock on wood*

I pressed enter. I saw the words appear on my screen. Then the entire screen went black, and I was greeted with:

CPU critical temperature reached (92° C) Shutting down…

So, I guess the moral here is, when you’ve solved a problem, don’t let your computer know you’ve fixed it.