I use one of OS X's built-in photo screensavers and point it to my Dropbox folder so that photos I add to Dropbox automatically appear. However, I've noticed that photos I've deleted from Dropbox continue appearing in the screensaver, long after they've been deleted.
I suspect that when I first set up the screensaver, OS X cached a copy of the photos in my Dropbox folder, so they remain even after I've deleted the source photos.
If so, is there any way to clear this cache to keep the deleted photos from appearing? I've tried toggling between different screensavers, but they still show up. And I thought maybe the cache would clear itself after a few hours or a day, but it's now been nearly a week and the deleted photos are still appearing.