Since Linux is not an approved system there could be some type of corruption problem from using in both Windows and Linux. I would suggest coping the data off the drive while you can before trying anything. Something like TestDisk http://www.cgsecurity.org/wiki/TestDisk might fix the corruption issue. I have seen similar posts from people using the drive on different versions of Windows. I suspect it may be something related to the format properties like cluster size,
Joe
