DVD drive read speed

I installed openSUSE 11.2 (GNOME Desktop) several days ago, but I’m having problems with DVD playback. The DVD drive keeps spinning at high speed while reading a DVD and that’s very disturbing when you’re watching a movie. K3B has an option to change the read speed, but when I try to change it the new speed doesn’t get saved? By the way, in Ubuntu it worked just fine.

Does anyone know the reason why I can’t set the speed by using K3B’s option, or perhaps someone knows a better solution?

67: SCSI 00.0: 10602 CD-ROM (DVD)
  [Created at block.247]
  UDI: /org/freedesktop/Hal/devices/storage_model_CD_DVDW_SH_S182D
  Unique ID: KD9E.0hTqQCgFX56
  Parent ID: 3p2J.q+IlYYXyZe8
  SysFS ID: /class/block/sr0
  SysFS BusID: 0:0:0:0
  SysFS Device Link: /devices/pci0000:00/0000:00:1f.1/host0/target0:0:0/0:0:0:0
  Hardware Class: cdrom
  Model: "TSSTcorp CD/DVDW SH-S182D"
  Vendor: "TSSTcorp"
  Device: "CD/DVDW SH-S182D"
  Revision: "SB07"
  Driver: "ata_piix", "sr"
  Device File: /dev/sr0 (/dev/sg0)
  Device Files: /dev/sr0, /dev/block/11:0, /dev/scd0, /dev/disk/by-path/pci-0000:00:1f.1-scsi-0:0:0:0, /dev/cdrom, /dev/cdrw, /dev/dvd, /dev/dvdrw
  Device Number: block 11:0 (char 21:0)
  Features: CD-R, CD-RW, DVD, DVD-R, DVD-RW, DVD+R, DVD+RW, DVD+DL, DVDRAM
  Drive status: no medium
  Config Status: cfg=no, avail=yes, need=no, active=unknown
  Attached to: #28 (IDE interface)
  Drive Speed: 48

Thanks in advance.