I've been having a problem with my Mail.app and the way it interfaces with my IMAP account. A few days ago, for no apparent reason, Mail wouldn't let me mark any message as read or delete them. If I try to do either, they just show as unread or reappear later. I've had this problem before with another IMAP account, and we ended up fixing it by backing up my mail messages and recreating my account. Ideally, I'd like to avoid this.
Has anyone else had these issues? Is there a fix for them? As a side note, I recently got a Blackberry, but the problems started well after I had been using it. Any help is appreciated. Thanks.