I've had a few ads disapproved by Google, is this some sort of an automated process? or did they manually go in and review the sites being advertised?
If they were live at one point and now they are not odds are a human manually viewed and disapproved them.
Whatever you do, make sure you're changing them a bit at least before resubmitting. Google really hates it when people continually submit the same ad over and over, (not that you'd do that..>)