Hello!
I propably crashed my Pogoplug E02 device by trying to install Debian Squeeze too often. I am a beginner when it comes to that.
Now by trying to reach the pogoplug device by Putty (Windows), I get fdisk: cannot open /dev/sda ("/sbin/fdisk /dev/sda"). And there is another problem, which generally didn't appear: On my.pogoplug.com i can't see the content of my USB device -> Your Pogoplug device does not have a hard drive attached. Maybe I crashed the USB device, not the Pogoplug. I don't think so to be honest with you, because after failing to install Squeeze, I always used "HP Disk USB Storage Format Tool".
So all in all I may crashed something in the Pogoplug device.
Best Regards!