Version:           1.0.3 (using KDE 3.5.7)

When burning a cd iso file and choosing to verify written data there's an error "Written data in track 1 differs from original" I tried several cd's and dvd's from two different brands and still the data verification fails. The cd although not verified seemed to work just fine. Here is the debugging ouptput:
System
-----------------------
K3b Version: 1.0.3

KDE Version: 3.5.7
QT Version:  3.3.8
Kernel:      2.6.22.18-desktop-1mdv
Devices
-----------------------
HL-DT-ST DVDRAM GSA-H42N RL01 (/dev/hdb, ) [CD-R, CD-RW, CD-ROM, DVD-ROM, DVD-R, DVD-RW, DVD-R DL, DVD+R, DVD+RW, DVD+R DL] [DVD-ROM, DVD-R Sequential, DVD-R Dual Layer Sequential, DVD-R Dual Layer Jump, DVD-RAM, DVD-RW Restricted Overwrite, DVD-RW Sequential, DVD+RW, DVD+R, DVD+R Dual Layer, CD-ROM, CD-R, CD-RW] [SAO, TAO, RAW, SAO/R96P, SAO/R96R, RAW/R16, RAW/R96P, RAW/R96R, Restricted Overwrite, Layer Jump]

Burned media
-----------------------
DVD+R

K3bDataTrackReader
-----------------------
reading sectors 0 to 83358 with sector size 2048. Length: 83359 sectors, 170719232 bytes.
using buffer size of 64 blocks.
Read a total of 83359 sectors (170719232 bytes)

K3bMd5Job
-----------------------
Reached max read of 170719232. Stopping after 170719232 bytes.

Used versions
-----------------------
growisofs: 7.0

growisofs
-----------------------
Executing 'builtin_dd if=/dev/fd/0 of=/dev/hdb obs=32k seek=0'
/dev/hdb: "Current Write Speed" is 16.4x1352KBps.
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
          0/170719232 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU   0.0%
    1114112/170719232 ( 0.7%) @0.2x, remaining 142:05 RBU 100.0% UBU   2.9%
    3211264/170719232 ( 1.9%) @0.5x, remaining 51:17 RBU 100.0% UBU  97.1%
    8454144/170719232 ( 5.0%) @1.1x, remaining 20:09 RBU 100.0% UBU  97.1%
   13729792/170719232 ( 8.0%) @1.1x, remaining 12:34 RBU 100.0% UBU  97.1%
   21659648/170719232 (12.7%) @1.7x, remaining 7:54 RBU 100.0% UBU  97.1%
   49414144/170719232 (28.9%) @6.0x, remaining 2:59 RBU 100.0% UBU 100.0%
   73859072/170719232 (43.3%) @5.3x, remaining 1:39 RBU 100.0% UBU  70.6%
  101613568/170719232 (59.5%) @6.0x, remaining 0:53 RBU 100.0% UBU 100.0%
  129368064/170719232 (75.8%) @6.0x, remaining 0:26 RBU 100.0% UBU 100.0%
  157122560/170719232 (92.0%) @6.0x, remaining 0:07 RBU  40.5% UBU 100.0%
/dev/hdb: flushing cache
/dev/hdb: closing track
/dev/hdb: closing disc

growisofs command:
-----------------------
/usr/bin/growisofs -Z /dev/hdb=/dev/fd/0 -use-the-force-luke=notray -use-the-force-luke=tty -use-the-force-luke=tracksize:83359 -dvd-compat -speed=16 -use-the-force-luke=bufsize:32m