The body is letting me know that I need to be less demanding for a day or two until I get a little caught up on sleep. It remains to be seen how angry the meat will be about having had caffeine fed to it.
The computer is getting sicker - I can't do processor-instensive functions anymore, because, even with the fan, the CPU overheats past the shutdown point if I, say, analyze mp3s, or extract compressed files. I think a weekend trip to pick up a new power supply is going to be necessary. Hopefully the UPS will help, too - it certainly won't hurt, anyway. I really don't want to have to replace the poor machine. Research time begins now.