Ok, if you bookmarked the 'New Posts' link, then that might be the problem. When you click the 'New Posts' link at the top of the forums, it creates a seed (id) with the search results. This seed is temporary and very specific to the member who is currently logged in. Make sure that you bookmark the following URL instead:

http://www.internettablettalk.com/forums/search.php?do=getnew