Okay here is what I have. I originally purchased a Droid X. I returned it and got the Droid 2. I took and backed up all the info from the SD Card on the Droid X. I then took that same info and copied it to the Droid 2 SD Card. Everything works great no problems. I then take the Droid 2 and connect it to my PC and it recognizes it being connected but when I put it to "usb mass storage" option it continously bounces from "unmount to mount" and "preparing sd card". I formatted a new card copied everything from the existing card and attempted to connect with the same result. I then pulled the card and formatted it, did not copy anything to the card, plugged it in blank, attempted to connect to PC with the same result. Any ideas would be greatly appreciated! THANKS!