Something weird with profile view
It used to be that the list of commented on topics were organized by most recent first. Now, a topic commented on 22 minutes ago is behind one that was last commented on 5 hours ago, and which was already viewed and thus is grayed out. What gives. If this is something new, it is definitely not an improvement.
You've probably switched from the normal "last reply" to "date started" on your profile page. Take a look at the top of the page (just under the box with "my followed discussions" etc.) and see which one is lit up and change it back to the other one.
See here: http://chowhound.chow.com/topics/918575