I played it on PC (got it via the Origin humble bundle). I searched for fixes and the PC version's buggy state is well-known, with no fixes except to save often and avoid bumping into corners too much.
It's simply a shoddy port, it doesn't even have X360 gamepad support (there is an ini hack, but the UI can't be controlled effectively without a mouse), which is weird for a 360 port. Bioware is lucky that the game is so good that people were willing to overlook the bugs.
