any time I transfer files (.mobi) to my paperwhite via the usb cord using windows explorer, 1 or 2 days later, all of my content disappears. if I look at my cloud content on the device, only a small portion of my books show up. have to do a factory reset to get all of my content to show up on the cloud again, but then have to download everything to the device again.
this is the second time it's happened...first time, Amazon replaced the device. didn't bother calling them this time.
Is this a common/known issue? Is there a way to avoid this happening?
