I have a small network sharing files. I have network shares mapped as drives.
Frequently, if the computer is idle for a long period, a "My Computer" shows "Disconnected Network Drive" next to the drive letter. A "net use" command also shows "disconnected." But they ARE NOT disconnected. Everything is accessible. The "My Network Places" screen also shows that all is normal.
I use ZoneAlarm AntiVir on all machines. Have tried changing security level from Med to Low (no firewall) on Trusted Zone. No difference.
If I didn't use the mapped drive letters, and just used the network share machine name/directory, I would not even know this was happening. It's only when I use the mapped drive letters.