The PC version that bad? Been trying to get a friend into it, but he stopped playing the PC version. I actually bought another copy of the 1st game for a playthrough since I couldn't find my old copy (I think I accidentally sold it). It was only $15 and that is worth it for the 20 hours I spent on my 2nd playthrough.
On the bioware forums (amongst others) there were people who suffered from bugs & a lot of crashes.
For my first run through, my processor was underpowered, but I had more memory than required and didn't get a single crash. When I upgraded my pc I ran into one crash, but that was fixed by a driver update. It did seem a little fussy with regards to Nvidia drivers though.