Disable Control Panel in Group Policy

In XP/SP2, fully patched, I usually disable Control Panel for some user systems in Group Policy, User Config > Admin Settings > Control Panel > Properties > Disable.  On one Dell Optiplex GX 270, when I complete this sequence & reboot, users can still access the Contro Panel.  Why and how to fix?
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Domain, or Local GPO?
tss-nmAuthor Commented:
It was done as Local, on the local PC not the DC.
Disable Control Panel

Try this method....
And have you tried going toa  workstation, and going to start>run>cmd.exe

gpupdate /force

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System Utilities

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