avast outlook exchange plug in

problem with avast 4
I am encountering following problem:
every 3 or 40 seconds appears for couple of seconds a small Grey window with avast logo and following inscription :avast outlook exchange plug in.
As long as this window appears computer is totally disabled.
I already uninstalled and installed again.No difference.
Could somebody help me how to correct ?
??? :cry:

What is your OS?
Whar is your email program?
Are you actually using MS Outlook not outlook express?

If not you need the Internet Mail provider and not the Outlook/Exchange plug-in, terminate it.

If you are using MS Outlook, then ensure that it is selected as a plug-in from within Outlook.

Are you using some sort of PDA/cellphone synchronization software?

I am using a headset for skype.Nothing else.
Thanks for looking into the matter !!