Toto - Sorry for going off at you - frustration on my part.
I understand that Virgin is not blocking the port in general. I was able to use my proxies until yesterday night. I have tested the following:
1. Used proxyfirewall to test other non private proxies on the same port - FAIL
2. Restarting router - FAIL
3. Testing my private proxies from alternate ISP's - PASS
4. Testing other computers/browsers on my virgin connection - FAIL
I'm out of other things to try
