In a Windows 2003 domain with Exchange 2003 and an XP workstation with Outlook 2007, at the top of Outlook, it list Unread Mail with a count next to it. In the Inbox, all mail is sorted so the latest mail is at the top. This user mentioned the other day, the count is suddenly higher than the unread mail she sees. I looked at it and verified there was no unread mail located in prior days that she had not read. The only had three unread mail at the top and the unread Count was 12. I highlighted all mail from the first read to the bottom and marked it as read. That lowered the number so it was correct. today it has started doing the same thing. How do I fix it permanently?