I just posted images on my blog with much relief.
Bridge was corrupting my cards as I opened them to edit. I had no idea that could happen, so I'm sharing in case anyone else doesn't know. (I have told quite a few photographers and none of them knew either.)
To solve the problem, I had to uninstall and then reinstall CS2. No problems now. All is well. All images are fine. Whew.
Be sure to always have a backup before processing in Bridge.