I had the following issues after using a 3G card yesterday
- Could not access any file servers on the domain
- Could ping the file servers
- Could use RDP and VNC to any machine on the network
- Could use IP based applications, i.e. POP3, IMAP and HTTP/S
I tried an utility called WinSockXPFix which does some registry hacks, which allowed me to work for all of 10 seconds, as soon a the logon script started up all access crashed again.
What I eventually did was uninstall all the network adapters, as just removing the problem one did not help. Rebooted, and let Windows reinstall the drivers.
So far all works still after 30 minutes, a record so far