Windows Live Mail on Windows 7

Windows Live Mail on Windows 7

Windows Live Mail has been running just fine up until a few days ago.
Now I get the mail update window pop up on the error tab but there are
NO error messages.
If I look at the other tab I see that one of the eMail accounts, the
first on listed, has not updated. However, I can send eMails to that
account and I get the eMails in this "erroring" account just fine.
Other than the annoying popup window and beep that relentlessly
interrupts my typing (come on MS what's the matter with you) it does
not seem to be a problems. At least I have not detected anything yet.

So I have to shut down Live Mail while working so it does not steal my
keystrokes!

Any ideas on what is happening and what to do to fix?
Other than reinstalling Live Mail that is.