A few little errors that I've been getting for awhile that are a bit annoying:
* Editing appearance doesn't always turn you around, leaving you with preview windows facing the wrong way.
* Alt tabbing (Making you autoaway) and then coming back to SL sometimes makes your AV jerk rapidly between the away and standing pose.
* Animations sometimes get stuck on. I think this is usually a result of a script not stopping an animation properly, you end up sticking to all kinds of animations (Typing, no leg movement during walking etc...).