burning as non-root with k3b

[Petr Janda]

For some reason I cannot burn as non-root. The permissions on /dev/cd0c 
are 660 root:burning and I am positively in the burning group:
[elevator] ~% id petr
uid=1001(petr) gid=1001(petr) groups=1001(petr), 0(wheel), 5(operator), 
1018(burning)

Even when i set permissions to 777 on cd0c, my dvd writer still gets 
unrecognized in k3b.

Any ideas?

Petr