Cannot see new emails in outlook

using norton internet secturity and windows 7, and outlook 7.  Simple POP account.  i know they are coming, because i see the quick preview and i hear the chime. also, the inbox unread count goes up.  But i cannot 'see' them.  It was working somewhat, but then i moved a blocked address to an allowed address, and then all of a sudden, NO messages are coming through.  I checked the lists so many times.  I disabled email protection completely.  Still i can't see the messages or any new messages.  I remove the email account and recreate it.  Still the same.