I am one of the people who reported this issue to Ram...
It is NOT a firewall issue, if it were, it would not work on 6.35 and NOT on 7.0 when both are running (at the same time) from the same machine. There is some issue in this area, and I think we need to let K. look at this to determine what the issue is... I am on XP and other are on windows 7 so it does not seem to be an os related issue either..
Hope this helps to track it down.
