GifAnimator - 5:36 pm on Aug 18, 2011 (gmt 0)

I have never known a Google Adsense employee give a direct answer to a specific question. They always seem to direct you to a a section on the help pages or TOS.
You do not normally get a warning before your site is disabled although they have been known to remove adds on some pages and notify you that you should make that page comply with TOS.