So when you click the drop down link, check the messages and then go back to forumhome, the notification is still there ? or is it something else.
here's a situation :
"i receieve 1 visitor profile message"
when i click on drop down list and check the message, When i return to the index its all clear .
BUT
"i receieve 1 visitor profile message"
when i click on drop down list and check the message start a conversation with that person by clicking on "Veiw Conversation" link , and during that conversation the no. of messages i receive i reply to all of them , and the no. of message i have replied through that Conversation Box , those no. of messages still appear unread in the Drop Down List.