Got a machine where each time I run gpupdate /force the result is a request for reboot. I am wondering if anyone knows why after 4 or 5 times the machine still prompts for a reboot or logout?

Under similar conditions, other machines usually simply close the cmd window. I have understood that a reboot was onlly necessary if some policy was updated and that particular policy required a reboot to take effect.

It is as if the policy changes are not being stored on the machine but that is obviously a guess on my part.