Woot! The Oblivion patch was just released.
I had one quest that jammed up my game. Thankfully, with games like Oblivion, I've learned to keep a rotation of about 10 save games. I skipped back about five saves before I found the critical juncture that bugged up the game. I replayed about 30 minute of game to catch up (minus that one action). I'm not sure if this patch fixes the problem, but I'm always happy for patches!