USB flash drive: permissions, etc.

[john <johnsong@kos.net>]

I can no longer read or write or even unmounted  a USB flash drive.

Something happened during the last two weeks. I am using squeeze and 
regularly upgrade on a daily basis. The only change to the system I can 
recall was debfoster run during that period where I deleted some 4 or 
five libraries.

The only other clues I have are the options, "safely remove usb" and 
"eject" have disappeared from nautilus (right click).

I recall this happening to me some 2 years ago, but I have mislaid the 
solution. Searches through google and this list have not yielded the 
solution.

John