xsane no longer starts as non-root -- Error inserting ...

I had xsane working with misc. canon USB scanners,
but now xsane dumps and I get error messages like these:

FATAL: Error inserting parport (/lib/modules/2.6.25.18-0.2-default/kernel/drivers/parport/parport.ko): Operation not permitted
WARNING: Error inserting parport (/lib/modules/2.6.25.18-0.2-default/kernel/drivers/parport/parport.ko): Operation not permitted
FATAL: Error inserting parport_pc (/lib/modules/2.6.25.18-0.2-default/kernel/drivers/parport/parport_pc.ko): Operation not permitted
WARNING: Error inserting parport (/lib/modules/2.6.25.18-0.2-default/kernel/drivers/parport/parport.ko): Operation not permitted
FATAL: Error inserting lp (/lib/modules/2.6.25.18-0.2-default/kernel/drivers/char/lp.ko): Operation not permitted

In /var/log/messages it looks like this:

Jan 1 01:48:37 HayekJ rmmod: ERROR: Module lp does not exist in /proc/modules
Jan 1 01:48:37 HayekJ rmmod: ERROR: Module parport_pc does not exist in /proc/modules
Jan 1 01:48:37 HayekJ rmmod: ERROR: Module ppdev does not exist in /proc/modules
Jan 1 01:48:37 HayekJ rmmod: ERROR: Module parport does not exist in /proc/modules

I mean, I don’t care for parallel port scanners,
mine are all USB ones,
so I rather prefer skipping the parallel port checks.

Right, xsane works if executed as root.