A member has reported that even though he's read all his messages, at the top of the screen it keeps telling him he's got 1 unread messages. After received 2 new messages and reading them, he tells me it now tells him he's got 2 unread messages. No other members have reported a problem, and it seems to be working fine for me as well.
Is this something that can easily be cleared or reset, or is it likely a database problem?
Is the user's PM Index full? If so, they would have to delete some messages, and then click the link to release the ones that went into the overflow bin.