F 18 problem accessing external usb drives with XFS

[Paul Erickson]

I have a couple of external disks that I formatted in XFS using F11, I 
think for data backup. Now with a new F 18 installation, when I plug
in the drive, the disk icons appear on the desktop, but when I try to 
access them, I get an error message stating that the contents cannot be 
displayed due to not having the necessary permissions.

A google search of the archives has not turned up anything so far.

Any suggestions?

Thanks in advance.

cheers, Paul