Hey guys, so apparently there's some kind of security attack via bad flash going on at LJ right now - Dreamwidth is not affected, but my LJ mirror did get hit last entry.
You can read about it
here, but long story short, if you read my last entry (about the books) on LJ, while logged in to LJ, or if you read anyone else's LJ while logged in, go to the Edit Journal page, and check your recent entries for suspicious-looking flash code that you didn't put there, and check and make sure your icon and security preferences for recent posts are what they should be.