Because I market a lot, I KNOW that someone had sent me tc... So I click the box in the right hand corner of the PM application.
Look for the word "Today" then trace it strace across the screen to "Messages: x .box here." Click on that box, then scroll to the bottom > selected messages : Mark as read > click on "go"
For messages past that, there is an option above that that should have a larger number:
http://i.imgur.com/yTlUT7z.png
Check the box next to the larger number to select ALL of your messages and then repeat the "Mark as read" steps and that should catch any past messages you might have missed.
Hope this helps.
Last edited by Wolfe; Jul 15, 2013 at 03:13 PM.