Just curious, is that chrome, and are those threads from a spambot by any chance? if so, there's a good possibility that HTML in the spambots advertising is interfereing with your browser. If it just happened randomly, disregard me trying to know it all
Looks like it is Chrome, IE nor Opera look like that, I'm sure FF doesn't look like that either, not even customized.
This is what iam getting in the Directory section maybe its related i dont know...but the Directory section seems to be out of whack iam using I.E 7