System asks for admin pass on shut down...

[Shadow]

Hey guy's I know I mention this little problem before in the "Introduce Yourself" section of the forum but, since there's already a section for this related problem I'll post here. Okay guy's? Like I mentioned before, we have one Dell PC with LL installed as primary OS coming from Windows XP. Since installing LL on our system when logging out of a user account and shutting down the OS, it always asks for the admin password which is really annoying. Anyway to turn this off or get rid of it? Thanks.

Shadow.