[Asphyx]

Well the fastest way to copy files is to get an adapter that turns the microsd into a standard SD card, then put it in the computer to copy the files.

The second fastest way is to connect the phone (with the card in it) using disk drive instead of active sync.

The slowness is due to the USB connection not any issue with the card which is why putting it in an adapter and copying directly to the card from the computer is best when using trying to copy large amounts of data.