Hi, I just bought the X on monday and Ive apparently killed 2 16gb sd cards already. Yesterday, the card decided to unmount itself. I shut it down, reseated it, and powered up - the phone tells me the card is unmounted and that there may be a corrupted file system <paraphrasing>. I tried everything short of connecting the card to my PC (I didnt have a reader handy) so I went to vzw, told them, and they gave me a new card no problem. Formatted, it worked! Less than 24 hours later, the same thing has happened again. Could the phone be a lemon? Im afraid of putting anything on the card because it seems to wipe everything out every time.