Vista and XP network - computers can't see each other

Hi all,

I have a home office network with one new Dell laptop with Windows Vista
Home Basic which I bought a couple of weeks ago, one desktop with Windows XP
Pro and one older laptop with Windows XP Pro. The laptops are connected
wirelessly, the desktop is using a wired Ethernet connection.

Obviously, there have been never a problem with XP machines. Initially, the
Vista machine was also able to connect to everybody else. I didn't even
bother to look at the settings because everything worked. Then I went to a
business trip, and connected to other networks, including wireless public
ones in the airports. When I came back, I was unable to share files or even
see other computers on the LAN. The internet connection is working fine
though. Oh yes, and I also installed a couple of updates, probably some of
those constituting Service Pack 1 as well.

When I checked the network, to my surprise, it turned out that it became
"Public" (could this be "guilt by association" - the airport wireless
networks are public, so my home network is public, too?). I changed it to
"Private". Didn't help. Checked shares, made sure that the users have the
same passwords. Ditto. I deleted the history of the airport networks. Still
the same.

I am not using Windows Firewalls neither Symantec stuff on any of the
machines.

I went to PChuck's website at http://networking.nitecruzr.net and tweaked
the registry as he suggested, explicitly enabled NetBIOS over TCP/IP,
disabled IPv6. Nothing. On one point I was able to see the XP machines, but
not to browse them (I think the error was "Network name not found"), and
then it went back to square one. I switched off both firewalls (Kerio on XP,
Comodo on Vista) - nothing. Pinging an IP works, so this is probably
something about the name resolution?

And, there was a strange event entry on one point:

The master browser has received a server announcement from the computer
DEVSERVER [that's an XP machine] that believes that it is the master browser
for the domain on transport NetBT_Tcpip_{65D5631D-9BA7-4E7B-8188-8DFA3FBA.
The master browser is stopping or an election is being forced.


I attached the logs that PChuck asked for diagnosis. As you can see,
browstat on Vista machine doesn't work.

Help is much appreciated.

Best regards,
Vadim Berman