The systems types always have great reasons for mucking with what isn't broken.
C/Net has been changing the headers for all of their forums.
They still have unresolved problems due to the change.
If it appears that the forum lost track of the threads that you have visited.......Log out and then log back in. Then leave C/Net, and then come back.
When you try to reply to a Message and when you try to Create a New Discussion you may be met with a blank yellow screen titled "C|Net Reviews". You have to scroll way down to the bottom of that page to find the message window.
This is progress........we are told.