I have a workstation which can be logged and used as normal but when the user logs off it goes back to the ctl-alt-del screen as normal but then after a period of time the machine goes into the locked state even if you enter an admin password you cannot log the user off even when i have logged on when it does the same I cannot unlock it. if machine is rebooted it can be used as normal but when user logs off same thing happens is using NT4 with sp6a any ideas?