NW6.5SP5, BM3.8SP5, ran Craigs tuneup.ncf and using his proxy.cfg

Having a problem accessing only one website. (www.webex.com) All others
appear to be fine. The page starts to load as I can see the top part of
the page start to render, and then the screen goes to the "The page
cannot be displayed" error. That message is from the browser not BM. If
I set my browser proxy to one of the other two BM servers I have
running, the site loads just fine. Tried unloading the filters, clearing
the cache (which is on a traditional volume).

Anything else I can check?