I have two items in trash on my Mac Pro. When I try to empty trash I get error messages saying that each of the two files is in use, and that items called "share" and "usr" are also in use, so nothing gets deleted. I've tried all the suggestions in this thread, and nothing works. When I copy the two files to somewhere else on the Mac and then move them to trash, they can be deleted, but the original bad files are still in trash. Any suggestions?