Hi all, I have a problem using my USB memory sticks with my new iMac. I dont know if I'm doing something wrong as I'm new to Mac OS's but here is my problem..... Putting files eg Movie and Music files on my stick is fine, but when i try and take them off I have issues. When i send the exsisting files on my stick to my trash and then try and put new files on there, it still says my usb stick is full even though the old files are no longer on the stick!! its like they are still on there as my spare space stays the same.......how do i delete them off....I just threw out my 4 gig stick cause I thought it was a dud....now it happened on my new one, so it cant be conisidence, it has to be something I'm doing (or not doing).......can anyone help me!!