It looks like someone may have hacked into blogger.com. It looks like (so far) the damage was minor. My content is all there, but one of the links points to a hacked page (not mine, on their site). I did immediately
a) Go to my server and change my passwords, and
b) download copies of all my blog files. Worst case, I can rebuild. This just forces me to do that backup to CD that I’ve been meaning to do all week.