said by Thinkdiff:
What software do you use the manage your photos? I believe iPhoto will move deleted versions of photos to the trash, but not actually empty the trash.
How often do you empty your trash? Could they have been piling up for weeks?
I use iPhoto "some" but not much. Just never used it enough to be a fan.
Mostly make my own folders. That said: I did use it some the last couple weeks while vacationing (mostly just for easy dumping of cards). I empty the trash every month or so probably. There were only images in it this time. over 1100!