MonikerDeedpole

Thanks for the reply.

Perhaps there is something uniquely screwy about my install, because whether I make the above mentioned changes, either through Administrative Tools or by manually changing the corresponding registry key and restarting, the result is that UAC is turned off. Turning UAC it back on in Security Center restores the ConsentPromptBehaviorAdmin key back to its default value.

Am I missing something?

Cheers.