We have Network Drives mapped through logon batch file, sometimes they stop showing the sharenames and only say "Network Drive (<Drive Letter>:)"
If the user logs off and logs back in, it starts to show the sharenames fine
Its an intermittent issue and on any logon it stops/starts showing.
File servers are Windows Server 2003 R2
Clients are Windows 7 Enterprise
This issue is not experienced on Windows XP clients :-(