anyone else have issues with copying files to/from their g-nex ? i've noticed a few times that my windows explorer freezes .... i'm getting 'unexpected error' copying some files, and once when i tried to copy everything in the sdcard directory it stopped copying after some arbitrary time .... i'm confident my machine doesn't have any issues, usb ports are good and i'm using the samsung cable .... is this normal with the MTP protocol ? i've noticed it's limited in functionality, when something is being transferred i can't copy or move anything else until it's done. it's critical for me to save the contents of sdcard onto my pc .... yesterday i did a stock reflash using wug's toolkit and found that it deleted everything in the sdcard folder, which i wasn't expecting. also, i can't use synctoy with the g-nex, which is another minus for this MTP protocol.