I have a problem with Windows 2000 sp 4 workstations with 4.91 sp1
client running on Dell Optiplex GX150.

There are some users who will turn on their workstations and walk away.
When they come back to log in and hit ctrl-alt-del they see a "locked
workstaton" login screen. When they try to unlock the workstation with
their user ID and password the workstaion shuts down but does not power

I don't know if this is a client issue or not but it's very strange.
Does anyone have any experience with this problem??