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If your intention is to keep the page for "follow" I would not submit a removal request for the page since that will wipe it off the map. Google needs to crawl your page to know you don't want it indexed. As I said, Google already re-crawled them and they are not re-indexed. Last cache dates show all is correctly lef out of  new indexation. I guess my concern was how long this pages will stay in index. That was done to make sure Panda will be able to recalculate the value of the site.

Yes, I would do the removal request.  I've had pages where I've noindexed them and months later they are still in the index.  Sometimes it takes AGES to get them removed unless you actually tell Google to do it via WMT.

These are not so bad pages, they are catalog pages, must be there with noindex, follow tags. Going grey isn't an option unfortunately - there are ~50,000 of them.

Irving, should we also submit removal request for these pages? Thank you

Out of total 365 days in a year both things happened at exactly Aug. 22nd. Hardly a coincidence. Knowing that Bing/Yahoo indexed 100 times less of our pages than Google did it is naturally normal to assume that the reason may be in some out-of-website factors?