hello, i use a macbook pro i5 @ 2.4. i've connected my wd passport on it and what happens is that i delete my files from my external hdd they move to trash. but when it comes to empty the trash the files are still there with zero or few kb. as soon as i dissconect my externall hdd, trash goes back to normal as if it was empty. as soon as i reconect my hdd, trash still shows the files inside. any soloutions??