UAC is turned back on!

My office PC gets UAC turned back on more often recently (not always). Probably, corporate is working some system polices and trig it.

From PkP's finding:
http://www.vistaheads.com/forums/microsoft-public-windows-vista-security/16572-disable-uac-oppoed-similar-group-policy.html
http://blog.halan.se/PermaLink,guid,4129667e-da9a-4118-9040-669d37a1ba88.aspx