Not sure about "udev", I'm not using it yet so I can't comment. It is something new in FC3 and
possibly sarge. There is a good writeup on how to create custom udev rules in the Dec 2004
Redhat Magazine:
http://www.redhat.com/magazine/002dec04/features/udev/
I really don't think this will solve your problem, as you've already set the permissions to what
they should be. Although, you may want to check that the permissions have survived the reboot.
If they haven't then depending on what is controlling the device permissions, you may have to
either adjust the settings in pam or udev (or possibly both)...
/Les