Actually, I think I just figured out what happened. I probably screwed up the default date back when I replaced it. EDIT: I went back to my notes. I'd replaced my CMOS battery on January 6, 2013, and the date that it reset to was January 6, 2023. I'm not sure if this sort of thing actually is possible (wouldn't it reset to the manufacturing date?), but it'd make sense if it was. ANOTHER EDIT: did I just get the next thread?