Yeah, you've done all the troubleshooting steps I would have done. That's a real stumper.

It sounds like something very firewall-like is configured on that computer, but you've done everything to make sure that's not the case. Including switching the ports on the router (because sometimes routers have per-port features that can do this kind of thing).

The only thing I can think of, and I'm sure this isn't the case because I know you're thorough, is that perhaps the Symantec firewall isn't as uninstalled as you think it is.

Wow, real stumper.

Since this is my bread and butter, I'm anxious to know the result and will watch this thread carefully.