There is a bug after ending a level with the score count. I know it happens when "ghosting" - seems like it doesn't count diamonds properly, but it may happen in different situations as well, not sure.
This screenshot is taken from the Beartaffy's youtube vid:
http://bor.imagination.eu.org/bug.jpgAs you can see the score section shows 75150$ collected in this level, however to the right, the "loot" section counts 105150, so 30k "vanished" in the summary to the left.
Sorry for bad english, it's not my primary language, trying to explain to the best of my possibilities.