Anyone have one of these? When I first got it I could access all usb drives connected to it from all my pc's and imac. Now only the imac can see the usb drives and copy from them. I cannot write to them from the imac (drives are NTFS). On the pc's now I only see a WDTV listed under networks and when I click on it it loads the WDTV web page to logon and edit the settings for the drive. Before there was also another wdtv and when I clicked on it it expanded to show all drives connected to the WDTV. Am confused as to why all of a sudden this has happened. All the usb drives have sharing set via windows 7.