Is there any further information on whether the Hotfix is now available? I am having this same problem. The main effect I am noticing, other than the Netlogon/GP/Time Service errors, is that after perhaps an hour my Win7 client drops all mapped drives and is unable to connect to the server (SBS 2003). It retains internet access. However, if I open a program that needs access to a database on the server BEFORE the connection is dropped, the client retains access to the server indefinitely whilst this program is running. Once the connection is dropped, the only way to reconnect is to log out and log back in (or restart, obv.). I am connected to the server via a switch. Will try the workarounds suggested above.
I have 4 Win7 clients and 2 XP, and am only seeing the problem on 1 laptop. Haven't yet been able to narrow it down why - the only obvious difference is that it's an oldish machine with a slow processor, originally XP, reformatted and Win7 installed (have not yet updated to SP1). The ethernet NIC is not any of the models previously mentioned.
