I've been wondering about alt-tabbing too. Is there no fix? It's really annoying not being able to alt-tab without the hotkeys getting screwed. Closing and reopening the game is such a hassle.
Edit: It seems to work now. I reinstalled, applied the patch and left the .bos files as they were and then put back all the save files and whatever I'd changed. I also left out the no-cd patch and the HighRes patch initially but installed the resolution patch and it works. The culprit must've...