Vista Beta 2 DNS Problem

I had a problem with Beta 2's Remote Desktop and found a temporary
solution which may help others. My system worked fine from home from an
XP Pro Laptop to Vista Desktop (behind a gateway router) but from a work
XP Pro system to Vista at home it ran really slow. The screen would
update for a few seconds then freeze for up to 30 seconds. Occasionally,
the connection would drop then try and reconnect. I searched everywhere
for help but didn't find anything.

I did some troubleshooting from the Vista server and got several error
messages when diagnosing the network connection. The error was an "error
connecting to a remote DNS server." Hmmm. I also noticed at times the
network icon would have an "!" indicating a problem with the connection.
These errors were sporadic. Sometimes they were there and sometimes not.
At no time did I lose the ability to surf IE7 or do other online tasks
when at the console. I did have problems pinging the outside world using
the command window.

I changed/added several DNS server addresses for my ISP (Charter). I
could now ping some places but not others. It was like DNS was working
sometimes. When I got back to work I tried using my external IP address
instead of the one assigned by DynsDNS and remote desktop is now working
fine again. Something in Vista concerning DNS is broken.

My system is an Asus A8N SLI Premium motherboard with 2 on board
networking connections. I am only using the Marvel chipset. Any ideas?

Thanks,
Dave