I have this problem also, here is the k3b/growisofs output:

System
-----------------------
K3b Version: 0.12.17

KDE Version: 3.5.5
QT Version:  3.3.6
Kernel:      2.6.17-10-generic
Devices
-----------------------
HL-DT-ST DVDRAM GSA-H12N UL01 (/dev/hdc, ) at /media/cdrom0 [CD-R; CD-RW; CD-ROM; DVD-ROM; DVD-RAM; 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 Double Layer; CD-ROM; CD-R; CD-RW] [SAO; TAO; RAW; SAO/R96P; SAO/R96R; RAW/R16; RAW/R96P; RAW/R96R; Restricted Overwrite; Layer Jump]

Used versions
-----------------------
growisofs: 6.1
mkisofs: 2.1.1a03-unofficial-iconv

growisofs
-----------------------
INFO: UTF-8 character encoding detected by locale settings.
 Assuming UTF-8 encoded filenames on source filesystem,
 use -input-charset to override.
  0.03% done, estimate finish Mon Jan  1 15:58:30 2007
  0.07% done, estimate finish Mon Jan  1 15:58:30 2007
  0.10% done, estimate finish Mon Jan  1 15:58:30 2007
  0.14% done, estimate finish Mon Jan  1 15:58:30 2007
  0.17% done, estimate finish Mon Jan  1 16:08:20 2007
  0.20% done, estimate finish Mon Jan  1 16:06:42 2007
  0.24% done, estimate finish Mon Jan  1 16:05:33 2007
  0.27% done, estimate finish Mon Jan  1 16:04:40 2007
  0.30% done, estimate finish Mon Jan  1 16:03:59 2007
  0.34% done, estimate finish Mon Jan  1 16:03:26 2007
  0.37% done, estimate finish Mon Jan  1 16:02:59 2007
  0.40% done, estimate finish Mon Jan  1 16:02:37 2007
  0.44% done, estimate finish Mon Jan  1 16:02:17 2007
  0.47% done, estimate finish Mon Jan  1 16:02:01 2007
  0.51% done, estimate finish Mon Jan  1 16:01:47 2007
  0.54% done, estimate finish Mon Jan  1 16:01:35 2007
  0.57% done, estimate finish Mon Jan  1 16:01:24 2007
  0.61% done, estimate finish Mon Jan  1 16:01:14 2007
  0.64% done, estimate finish Mon Jan  1 16:01:05 2007
  0.67% done, estimate finish Mon Jan  1 16:00:58 2007
  0.71% done, estimate finish Mon Jan  1 16:00:51 2007
  0.74% done, estimate finish Mon Jan  1 16:00:44 2007
  0.78% done, estimate finish Mon Jan  1 16:00:39 2007
  0.81% done, estimate finish Mon Jan  1 16:00:33 2007
  0.84% done, estimate finish Mon Jan  1 16:00:28 2007
  0.88% done, estimate finish Mon Jan  1 16:00:24 2007
  0.91% done, estimate finish Mon Jan  1 16:00:19 2007
  0.94% done, estimate finish Mon Jan  1 16:00:15 2007
  0.98% done, estimate finish Mon Jan  1 16:00:12 2007
  1.01% done, estimate finish Mon Jan  1 16:00:08 2007
  1.05% done, estimate finish Mon Jan  1 16:00:05 2007
  1.08% done, estimate finish Mon Jan  1 16:00:02 2007
/dev/hdc: "Current Write Speed" is 18.4x1385KBps.
  1.11% done, estimate finish Mon Jan  1 16:34:26 2007
:-[ WRITE@LBA=200h failed with SK=4h/ASC=08h/ACQ=03h]: Input/output error
:-( write failed: Input/output error
/dev/hdc: flushing cache
/dev/hdc: closing track
/dev/hdc: closing session

growisofs command:
-----------------------
/usr/bin/X11/growisofs -Z /dev/hdc -use-the-force-luke=notray -use-the-force-luke=tty -speed=18 -use-the-force-luke=bufsize:32m -gui -graft-points -volid K3b data project -volset  -appid K3B THE CD KREATOR (C) 1998-2005 SEBASTIAN TRUEG AND THE K3B TEAM -publisher  -preparer  -sysid LINUX -volset-size 1 -volset-seqno 1 -sort /tmp/kde-joerg/k3b4l079b.tmp -rational-rock -hide-list /tmp/kde-joerg/k3byX8aTb.tmp -joliet -hide-joliet-list /tmp/kde-joerg/k3bmLAmLa.tmp -full-iso9660-filenames -iso-level 2 -path-list /tmp/kde-joerg/k3bvST7fb.tmp