This seems to be a fairly common problem. I found these comments about scanner permissions problems on the net being attributed to a change occurring in Hardy.
"It turns out the code for noticing you plugged in a scanner and
setting appropriate permissions (like making it group "scanner")
has been removed from udev, the obvious place for it ... and moved
into hal. Except, you guessed it, whatever hal is supposed to be
doing isn't working, so the device's group is never set to "scanner"
to make it accessible to non-root users.
Lots of people are hitting this and filing bugs (search for
scanner permissions), in particular
bug
121082 and bug
217571." (From http://www.shallowsky.com/blog/linux/scanning-on-hardy.html)
Also, a discussion of the problem here. https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/217571
In this latter discussion, someone suggested doing this: (1) sudo addgroup scanner (2) sudo adduser <username> scanner
It worked for me.
Thanks for all the help!!!!!!! --Ralph
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