PM notification

I have a notification for a PM that was sent over a monnth ago. and the notification area still says 1 notification. It wont go away. No biggie in the general scheme of things, but it is irritating. Y'all must have caught on nasty bug!!

i had a new pending friend alert for like 2 yrs when a person who had requested my friendship was banned and then the account totally deleted before i clicked it. dont know what i did to get it to go away....but their is hope as mine finally disappeared a few months ago.