When descending stairs, the game didn't respond at all. The screen stayed on the upper level. I probably had visited the lower level earlier, but I'm not entirely sure - I'd been using an altar for a while on a couple levels higher. Cursor became the Windows 7 waiting circle (hourglass cursor). No error message or stack trace.
I actually had this bug happen to me twice now. Once when decending to level one of the CoC and once when decending into a random wilderness dungeon (possibly shard dungeon, unknown). Delayed reporting until second occurance.
Wow, Apparently I did. I had clearly meant to link to a different issue. Sorry.
Actually, I believe that you meant to post in a different issue and link to this. When I made this one, I searched pretty damn well for any potential prior reports. Besides, this is the one which was marked as "fixed", so your "this has been fixed" comment would make better sense if in an actual duplicate.
Can somebody petition this back to Fixed? I don't seem to be able to do that.