Hey Sean-
I have that same issue quite often, sometimes it's from the main page to the forum link, and other times it's after clicking on a section...or on a particular message. What I usually do is shut down the browser and start over and sometimes I have to repeat that process, other times it takes me right to where I want to go.
So basically, if it locks up - close that window and try again with a new browser window. It might be a pain but it's better than watching that little dark blue bar at the bottom fill in!