[ubuntu] Backup & Deja Dup

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http://ubuntuforums.org – I am testing out the above before I install the 64 bit of 12.04. When I hit "restore" of Backup the computer does nothing. When I go to my Home folder and try to see the contents of my external drive that I backed up to I can't access it. When I try to "Safely Remove" I am told I can't. Finally just rebooted and everything was back to normal. Any ideas? (Hardware)