Are both shots showing "not loading correctly"?
Looks like CSS has been disabled.
Something like, View | Use Style -> None.
Since Safe Mode didn't help, that kind of rules out an extension.
Though maybe some other blocking going on - even like blocking of cookies (or some of those other "blocking" measures FF now has), perhaps could contribute to that?
As a test, if you open a new, clean Profile, you will see the site works correctly.
Just need to pinpoint what in your current Profile is breaking it for you.
Fire 750, bring back 250.
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.19) Gecko/20110420 SeaMonkey/2.0.14 Pinball CopyURL+ FetchTextURL FlashGot NoScript