Mate, thanks 4 replying , i removed all the videos/movies i had on my internal, copied all the movies i wanted to my external using my pc, then i plugged the external to ps3 and everything was fine , they all came up in the g2 potable device, watched a bunch of them then turned ps3 off.
Then yesterday i noticed when i turned it on that my system internal space had gone down by 20gigs, so i went over to videos and it had copied a bunch of them to the internal to my horror. no chance i copied them to internal i would have seen the usual copy dialog come up.
Gonna delete them and see if it does it again, just thought that an UN- JB PS3 might need to make a copy to play, but since thats not the case. see if it does it again.