I have loaded windows live mail on to my new windows 7 machine.

I can send and receive mail just fine but when the program goes out to look for new mail

Sometimes (I think only when there are no new messages)

I get a pop up window that says

Some errors occurred while processing the requested task

Please review the list of errors below for more details-

The only task showing in that pop up window is

Check for new mail and the error tab shows no errors?

Every so often i get a pop up window in Outlook that says "Mail could not be received at this time" with a message saying that authentication failed due to invalid credentials.  However, it keeps sending and receiving email just fine, these annoying messages keep popping up every second or two and prevent me from accessing email.  I've tried resetting my password, but that doesn't stop them from coming.  Has anyone else had this problem, and how do I stop it from happening?

Thanks,
Sharon