I hadn't planned to upgrade WP today, but I was just in my admin area and I encountered some sort of "forced upgrade" screen that said "This file upgrades you from any previous version of WordPress to the latest."
I couldn't do anything in the admin area without clicking, so I went ahead and OK'd it.
Now, whenever I click on post titles, comments, categories, page titles, etc., I get an error page telling me the requested URLs are "not found on this server." In fact, I can't seem to access anything at all other than my main page.
I have no idea what happened, or even what sort of information I would need to include here to give you the full picture.
I think I was running WP 2.0.1 -- at least before this mess happened -- and my URL is http://www.nancy.cc/ .
I would greatly appreciate any help or advice you could offer. Thanks so much!