Some of my characters can't seem to roll anything but 1s and 2s with attack damage (d6,d8,d10) and even with the d20 while in combat, but it seems to balance since they roll high for out of combat checks
it would be interesting if the game had dice statistics which could actually show if the character is lucky or unlucky both with combat, with checks, or all of the above (note: BG2 did have a stat block page)