I am running BM 3.9 sp1 and when I try to browse a few sites using IE I am getting 504 errors. One of the sites is www.southwest.com when I click "Book A Flight" on the right select the from and to cities and click "Go" it gives me a 504 error. I am not having this problem with Firefox or when I try it outside of BM's proxy.

I am currently using Craig Johnson's proxy.cfg revision 30. I have tried unloading proxy and reloading with -cc to clear the cache.

I have tried everything I can think of to fix this and my boss won't take Microsoft SUCKS for an answer....please help