My girlfriends SD card in her s3 just randomly started to unmout out of no where. When this started happening, a reboot would fix it, but now the phone won't recognize it anymore, even after a reboot :/ right now we're on vacation, and she's running the CM10.1 7/22 nightly. Does she just need an update? Or is it something else? Also, the same thing happened to another SD card she had.