Group Policy applied but has no effect

Hi,

We upgraded our domain controllers from server 2003 to server 2008 R2. No action was made on GPs beside the /gpprep.

This week we created a group policy to disable Automatic Updates. Running GPRESULT, it shows the policy is being applied, however, Automatic Updates policy never gets disabled.

Anything must be done to the GPs?

Thank you.

Systems Engineer