GPO enforced and Linked but not applied

Hello,

I am deploying Forefront Client Security by GPOs but I still not receive anything on the client:

The keys to verify during the test are located in

HKLM > Software > Policies > Microsoft > Microsoft Forefront > Client Security > 1.0 

The GPO is enforced and OU is linked, it has been verified

Inheritance not blocked

Any idea?

Thanks,

Dom

System Center Operations Manager 2007 / System Center Configuration Manager 2007 R2 / Forefront Client Security / Forefront Identity Manager