20 or 30 minutes :P
Well, it depends on the game, I wouldn't want to wait more than 20 seconds in a game like God Hand, but I'm fine waiting 20 minutes in a game with very big areas that will take me a long time to get past until I see another loading screen.
If I get 20-30 minutes loading screens very often, I'd probably think something's wrong with the console or PC.
Never got anything that long though... the longest ones I've experienced were in MGS4 waiting for like 3 minutes to install the next act in the game. Those didn't bother me at all since they were so far away from one another.
Heavy Rain seems to have sort of "long" loading times too (like 20 seconds) but they don't seem to bother me.
I can't think of any game with annoying loading times (from the ones I've played)...
I think loading times will be way shorter next-gen.









