Installed it today--for some reason, the install went much more quickly than usual, under 30 minutes. So far, so good. I managed to wipe out my existing BB Messenger, but that was an easily remedied user error. I'm not noticing the warm-battery issue, though I have had that previously with earlier OSes, and it seems to be tied to Google Maps, especially when I try to use Latitude.
BlackBerry Bold 9000 (AT&T)