I was in much distress last night after a long two weeks and finding that my Zire 21 had hard reset itself...again. I lost a whole month's worth of data. I suppose I should've been more careful. I put my cell phone on top of it without thinking, which according to the online user bulletin boards, may be the cause for this. Still, this is some messed up hardware problem, and I'm not the only one who has it. It's unfortunate, I'd find the Zire 21 just about perfect otherwise.
So yeah, long day, already tired, and then I found out I had to re-build from the backup and try to re-create what I lost. At least today is Friday!