So this morning, one of our partners e-mailed me with a nasty little client bug in an area of the code which I only have passing familiarity with. By this evening, I had a good fix. Now we just need to figure out how to get it to the people who need it.
Mind you, it helps that this partner was represented by our former product manager who did a fine job of characterizing the bug. There's nothing like a good sample of the bug to make it easy to track down.
But it was really nice to do something productive today.