Got many Indie games in the last days via Steam and yeah I saw a couple of bugs.
Especially in the menus of Audiosurf, but also got one in Torchlight yesterday even though I was only playing the game for one hour.
Game is good, but IMO not worth more than.... let's say 7€.
Except for RPGs (they're full of bugs on every platform) I'd say the console games have far less bugs in general.