[andrewas]

All of them? in that case its likly nothing to do with the saves and more to do with lack of drive space

(hint: go to windows\temp and kill the lot. by definition nothing in their is essential to your computer, and windows should delete it all at shutdown. fat chance. it just accumulates.)

or it could be a virus or a corrupted install. but drive-space is easiest to check. i dont feel comfertable with less than 500mb free.

then scan your drive.

then re-install BG2.