WIN7 UAC issue

OK, so I set up my ADMIN account, programs etc, avast! was working fine, no problems with W7 UAC pop ups.
I was setting up my USER account, 3rd day into it, and all of a sudden I start getting a UAC pop up on the ADMIN and USER account for avast! when rebooting the PC ???
I have tried almost everything to get the UAC to stop, short of turning it off.
Any ideas as to what may have happened and a work around for this :-\

welcome to the forum.

i think some more information would be nice here if we should be able to help you.

what version of avast you using?

what is avast flagging on?

have you tried a scan with avast?

avast! 5.1.889
what is avast flagging on? (not sure what you mean by this)
All current scans including MBAM/Spybot show the pc is clean, no UAC pop ups from them, only avast!