whenever i try to delete stuff off any kind of memory device, it is gone from view but the stick remains full. when i plug it into a windows machine, i find a "trashes" folder with everything that was supposed to be deleted. i called applecare and as polite as the guy was, he basically just said third party blah blah blah call such and such blah blah blah. this is getting to be a huge issue. i can't clear a memory stick OR my digital camera. i'm not always going to be in a place where i can plug my devices into a windows machine so i can delete those pesky TRASH files off. any suggestions, ideas? anyone else had this problem? i'm extremely frustrated.