I know MSFT is issued patches for Windows Server versions to update to support 7. I don't have the list here but given your investment I'd make the call and see if your server is up to date, and ask about fixes that you don't get on the MSFT web site. In case you don't know, there are patches beyond what you find on the web site that you only gain access to by calling in and reporting the trouble.
I am running a domain with AD, and I have logon scripts that run, mapping network drives and printers. My script maps 4 drives, and when I log on, everything is fine. If I walk away from the machine for a few hours and come back, the mapped drives are all screwed up. They lose the capacity bars under the drive icon and when I try to access them they give me an error that an "unexpected network error occurred." If I log out and back in, everything is fine. There is only one other person using the 7 machine at this time, and they have the same problem with their ID, but again, only on Win7. On XP everything functions normally.
This is only happening on the 7 machines, not the XP machines. I have disabled RDC, auto sleep, PW on resume, and a couple other things (I can't remember) that may have been causing the problem, but it still happens. I want to migrate all my systems to 7, but not until I figure out this one last thing.
2 servers running Server 2003, 1 Domain Controller/AD, 1 file/print
Network is 4 laptops, 3 desktops. Linksys/Cisco wrt54g & HP Procurve 10/100 24 port switch
Win 7 machine-
Intel Core2Duo, 4 gigs RAM, Win7 64 bit