Threads redirect to search engine

I have the same issue as this person. [Only registered and activated users can see links. Click Here To Register...]
I could not even reply to that thread because it redirects to Yahoo within a few seconds. It took me 10 minutes to get this 'New Thread' page to freeze, so I could post this.
No matter what thread I click on, it automatically redirects to Yahoo search immediately. After I post this, I will not be able to even read the replies because it will redirect me before I get the chance. It just started this today.

The issue for the other person was cleared up. Are you using Firefox 17.0.1?

Using Firefox 18.0

Went to another pc and it does not redirect.
Same version of Firefox.