On the home page. The one that is directed to when searching thephins.com, certain options do not work. You can't vote on polls, the top part of the tags above "lionel dotson" are unclickable, and most of the new threads in the forum are unclickable. I can click them in IE but I don't use it so nope.
I'm testing in Firefox 4.0 and all seems fine. First thing would be to make sure you're running the latest version of Firefox. You might also try clearing cache and disabling add-ons.