I also need the dates you are seeing. If you see Nov 30, 2011, then yes, that's just me being "lazy" with making screenshots public.
Screenshots are private by default for, well, privacy. You need to specifically mark screenshots as public for them to show up. I usually don't do that, since most my screenshots are simply for my own reference (ie. bugged locations, locations that are too difficult, too easy, etc, etc) - so I leave them private.
So, if you're just referring to my screenshots, it's no bug.
Unless you have more examples. Include the dates though.