We have a user who's emails suddenly "disappear" from view when she is using Outlook 2007. Our Exchange server is running Exchange2010. The user has multiple Mailboxes that she has permission to view. Also, she has a PST file for archiving emails off of Exchange server. When her emails "disappear" she is usually clicking on different folders that have been created under her in-box. She has to click around folders before the emails return to view in her in-box. Has anyone else experienced this problem? If so, what have you found as a resolution?