netmeg - 3:38 pm on Nov 11, 2011 (gmt 0)
Personally, I have never had a situation (over hundreds of thousands of URLs in aggregate) where a NOINDEXed URL showed up in the index... UNLESS I or someone else had made a mistake and blocked crawling with robots.txt. If you do that, then G can't even get in to *see* the NOINDEX.
I'm not saying it can't happen, but I've never seen it happen without some logical explanation for it.