I downloaded a program on a windows machine and put it on my flash drive. When I got home to my mac, I put the program on the bootcamp partition of my HDD, and came back over to Mac. I deleted the program folder off of my flash drive, but when I go to empty the trash, not all the files are deleted. One folder stays in the the trash until I eject the flash drive...then the trash is empty. When I plug the drive back in, the files show up in the trash again!! Are there any suggestions?