The Blackberry Unite Server is Unabailable

Hello,

I installed BB Unite last night and was able to "share" both calendar and contact entries from one BB to another. This morning however, nothing works. When I attempt to "share" contact or calendar entries from BB I receive the "Unable to communicate with the server" message and if I attempt remote user mgmt from BB I get "The Blackberry Unite Server is Unabailable" message.

I've restarted the Windows XP machine that the Unite server sits on, disabled Norton 360 firewall and am still unable to get either of two BB's to connect to the server. I know that I have a live internet connection (I'm posting this from the "server") and the BB's both have 3 antenna bars just as they did last night when the testing worked. What gives?

Thanks in advance for any help.
Damon