Recently , no matter what PC I use, win xp, 2000, vista, win 7, ubumbtu 9.1, ipod touch, laptop or desktop, I can not see any files.  Folders and sub-folders are visible, but no files.  I' ve tryed several hard drives and a 16GB SDHC card to no avail.  Anyone else have this problem?  Firmware on Pogoplug is 2.01.