Regarding the access as normal user fixed for me too.
Starting application (gthumb) configured through
"System/Preferences/Removable Drives and Media/Digital Camera" still not
working - but that might be a different issue.
--
Normal user can't access USB camera Error (-53: 'Could not claim the U
I can confirm this (IXUS 55 and EOS 20D).
Workaround proposed is good enough to get access to the pictures as a
"normal" user. However, it does not fix the automount problem I have -
configuration in "System/Preferences/Removable Drives and Media/Digital
Camera" does not have any effect - configur