lucy24 - 9:00 pm on Sep 25, 2011 (gmt 0)
Where does the preview image come from?
That's not in step with the cached copy either. The preview image can be many months old.
From an entirely different UA, which mercifully calls itself Google Web Preview so you can block it by name.
Unless you meant the "preview" in wmt. There the ostensible preview is what the Googlebot sees, and the "real" site is what the previewbot sees.