Please rescue me from dvd burning hell.

I am using k3b under redhat 9.

The dvd burner is a Sony DRU-530A.

This is the debug output from k3b:

K3b Version: 0.11.6
KDE Version: 3.1-10 Red Hat
QT Version: 3.1.1

Executing 'builtin_dd if=/tmp/kde-X/k3b_image.img of=/dev/scd0 obs=32k
seek=0':-( Failed to change write speed: 0->3324

growisofs comand:
/usr/local/bin/growisofs -Z /dev/scd0=/tmp/kde-X/k3b_image.img
-use-the-force-luke=notray -use-the-force-luke=tty -speed=2.4

Thank you.