Probleme de gravure avec k3b

Bonjour,
j'ai un probleme pour graver un dvd-rw de données avec K3b
je suis sous mandriva 2008 spring i586
voila quand j'arrive a la page de gravure ce qui se passe

[url=http://f.imagehost.org/view/0408/capture1][img]http://f.imagehost.org/0408/capture1.jpg[/img][/url]

voici le rapport de debogage

System
-----------------------
K3b Version: 1.0.5

KDE Version: 3.5.9
QT Version: 3.3.8b
Kernel: 2.6.24.7-desktop-2mnb
Devices
-----------------------
PHILIPS SPD2412T P1.4 (/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 séquentiel, DVD-R double couche séquentiel, DVD+R double couche à saut, DVD-RAM, DVD RW à réinscription limitée, DVD-RW séquentiel, DVD+RW, DVD+R, DVD+R double couche, CD-ROM, CD-R, CD-RW] [SAO, TAO, RAW, SAO/R96P, SAO/R96R, RAW/R16, RAW/R96P, RAW/R96R, Réinscription restreinte, Saut de couche]

Burned media
-----------------------
DVD-RW séquentiel

K3bIsoImager
-----------------------
mkisofs print size result: 716736 (1467875328 bytes)
Pipe throughput: 33672192 bytes read, 33667840 bytes written.

Used versions
-----------------------
mkisofs: 1.1.7.1
growisofs: 7.0

growisofs
-----------------------
Executing 'builtin_dd if=/dev/fd/0 of=/dev/hdb obs=32k seek=0'
/dev/hdb: "Current Write Speed" is 2.0x1352KBps.
:-[ WRITE@LBA=0h failed with SK=5h/ASC=64h/ACQ=00h]: Input/output error
:-( attempt to re-run with -dvd-compat -dvd-compat to engage DAO or apply full blanking procedure
:-( write failed: Input/output error

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:716736 -speed=2 -use-the-force-luke=bufsize:32m

mkisofs
-----------------------
716736
I: -input-charset not specified, using utf-8 (detected in locale settings)
0.07% done, estimate finish Thu Apr 16 22:31:39 2009
0.14% done, estimate finish Thu Apr 16 22:31:39 2009
0.21% done, estimate finish Thu Apr 16 22:31:39 2009
0.28% done, estimate finish Thu Apr 16 22:37:34 2009
0.35% done, estimate finish Thu Apr 16 22:36:24 2009
0.42% done, estimate finish Thu Apr 16 22:35:37 2009
0.49% done, estimate finish Thu Apr 16 22:35:03 2009
0.56% done, estimate finish Thu Apr 16 22:34:37 2009
0.63% done, estimate finish Thu Apr 16 22:36:56 2009
0.70% done, estimate finish Thu Apr 16 22:36:25 2009
0.77% done, estimate finish Thu Apr 16 22:35:59 2009
0.84% done, estimate finish Thu Apr 16 22:35:37 2009
0.91% done, estimate finish Thu Apr 16 22:35:19 2009
0.98% done, estimate finish Thu Apr 16 22:36:45 2009
1.05% done, estimate finish Thu Apr 16 22:36:25 2009
1.12% done, estimate finish Thu Apr 16 22:36:07 2009
1.19% done, estimate finish Thu Apr 16 22:35:51 2009
1.26% done, estimate finish Thu Apr 16 22:36:57 2009
1.33% done, estimate finish Thu Apr 16 22:36:40 2009
1.40% done, estimate finish Thu Apr 16 22:36:25 2009
1.47% done, estimate finish Thu Apr 16 22:36:11 2009
1.54% done, estimate finish Thu Apr 16 22:37:04 2009
1.60% done, estimate finish Thu Apr 16 22:36:50 2009
1.68% done, estimate finish Thu Apr 16 22:36:37 2009
1.75% done, estimate finish Thu Apr 16 22:36:25 2009
1.81% done, estimate finish Thu Apr 16 22:36:14 2009
1.88% done, estimate finish Thu Apr 16 22:36:57 2009
1.96% done, estimate finish Thu Apr 16 22:36:45 2009
2.02% done, estimate finish Thu Apr 16 22:36:35 2009
2.09% done, estimate finish Thu Apr 16 22:36:25 2009
2.16% done, estimate finish Thu Apr 16 22:36:16 2009
2.23% done, estimate finish Thu Apr 16 22:36:07 2009

mkisofs calculate size command:
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/usr/bin/genisoimage -gui -graft-points -print-size -quiet -volid Queen - Live At Wembley 1986 -volset -appid K3B THE CD KREATOR (C) 1998-2006 SEBASTIAN TRUEG AND THE K3B TEAM -publisher -preparer -sysid LINUX -volset-size 1 -volset-seqno 1 -sort /home/lepere/tmp/kde-lepere/k3bPM0nBb.tmp -rational-rock -hide-list /home/lepere/tmp/kde-lepere/k3b0DyApb.tmp -joliet -joliet-long -hide-joliet-list /home/lepere/tmp/kde-lepere/k3bucGkka.tmp -no-cache-inodes -full-iso9660-filenames -iso-level 2 -path-list /home/lepere/tmp/kde-lepere/k3biZBf9b.tmp

mkisofs command:
-----------------------
/usr/bin/genisoimage -gui -graft-points -volid Queen - Live At Wembley 1986 -volset -appid K3B THE CD KREATOR (C) 1998-2006 SEBASTIAN TRUEG AND THE K3B TEAM -publisher -preparer -sysid LINUX -volset-size 1 -volset-seqno 1 -sort /home/lepere/tmp/kde-lepere/k3bYKe2wa.tmp -rational-rock -hide-list /home/lepere/tmp/kde-lepere/k3byQsSvb.tmp -joliet -joliet-long -hide-joliet-list /home/lepere/tmp/kde-lepere/k3bdKdGYb.tmp -no-cache-inodes -full-iso9660-filenames -iso-level 2 -path-list /home/lepere/tmp/kde-lepere/k3barYOlb.tmp

merci par avance a tous ceux qui pourront m'aider!!

bonne continuation a tous.