Problemas com Mídia LG

Olá pessoal tenho um Note HP com um gravador de DVD NEC-6500. Comprei um DVD-R da LG e não estou conseguindo gravar neles. Tentei com o Nero e com o K3b e obtenho sempre o mesmo erro. Listo abaixo a saída de erro do K3b;

System
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K3b Version: 0.12.17

KDE Version: 3.5.6-0.3.fc6 Fedora-Core
QT Version: 3.3.7
Kernel: 2.6.20-1.2925.fc6
Devices
-----------------------
_NEC DVD+-RW ND-6500A 2.40 (/dev/hdc, ) at [CD-R; CD-RW; CD-ROM; DVD-ROM; DVD-R; DVD-RW; DVD+R; DVD+RW; DVD+R DL] [DVD-ROM; DVD-R Seqüencial; Sobrescrita Restrita de DVD-RW; DVD-RW Seqüencial; DVD+RW; DVD+R; DVD+R de Dupla Camada; CD-ROM; CD-R; CD-RW] [SAO; TAO; RAW; SAO/R96P; SAO/R96R; RAW/R16; RAW/R96P; RAW/R96R; Sobrescrita Restrita]

Used versions
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growisofs: 7.0
mkisofs: 2.1

growisofs
-----------------------
INFO: UTF-8 character encoding detected by locale settings.
Assuming UTF-8 encoded filenames on source filesystem,
use -input-charset to override.
0.09% done, estimate finish Sat Mar 31 13:55:20 2007
0.19% done, estimate finish Sat Mar 31 14:04:11 2007
0.28% done, estimate finish Sat Mar 31 14:01:16 2007
0.37% done, estimate finish Sat Mar 31 13:59:48 2007
0.46% done, estimate finish Sat Mar 31 13:58:55 2007
0.56% done, estimate finish Sat Mar 31 14:01:17 2007
0.65% done, estimate finish Sat Mar 31 14:00:26 2007
0.74% done, estimate finish Sat Mar 31 13:59:48 2007
0.84% done, estimate finish Sat Mar 31 13:59:19 2007
0.93% done, estimate finish Sat Mar 31 13:58:54 2007
1.02% done, estimate finish Sat Mar 31 14:00:12 2007
1.12% done, estimate finish Sat Mar 31 13:59:48 2007
1.21% done, estimate finish Sat Mar 31 13:59:28 2007
1.30% done, estimate finish Sat Mar 31 13:59:10 2007
1.40% done, estimate finish Sat Mar 31 13:58:54 2007
1.49% done, estimate finish Sat Mar 31 13:59:48 2007
1.58% done, estimate finish Sat Mar 31 13:59:33 2007
1.68% done, estimate finish Sat Mar 31 13:59:18 2007
1.77% done, estimate finish Sat Mar 31 13:59:06 2007
1.86% done, estimate finish Sat Mar 31 13:58:55 2007
1.95% done, estimate finish Sat Mar 31 13:58:44 2007
2.05% done, estimate finish Sat Mar 31 13:58:35 2007
2.14% done, estimate finish Sat Mar 31 13:58:26 2007
2.23% done, estimate finish Sat Mar 31 13:59:04 2007
2.32% done, estimate finish Sat Mar 31 13:58:55 2007
2.42% done, estimate finish Sat Mar 31 13:58:46 2007
2.51% done, estimate finish Sat Mar 31 13:58:39 2007
2.60% done, estimate finish Sat Mar 31 13:58:32 2007
2.70% done, estimate finish Sat Mar 31 13:58:25 2007
2.79% done, estimate finish Sat Mar 31 13:58:19 2007
2.88% done, estimate finish Sat Mar 31 13:58:13 2007
2.97% done, estimate finish Sat Mar 31 13:58:08 2007
/dev/hdc: "Current Write Speed" is 1.0x1352KBps.
:-[ WRITE@LBA=0h failed with SK=5h/ASC=30h/ACQ=05h]: Wrong medium type
:-( media is not formatted or unsupported.
:-( write failed: Wrong medium type

growisofs command:
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/usr/bin/growisofs -Z /dev/hdc -use-the-force-luke=notray -use-the-force-luke=tty -speed=3.1 -use-the-force-luke=bufsize:32m -gui -graft-points -volid 24S06Disc2 -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-fred/k3bdDVGUa.tmp -rational-rock -hide-list /tmp/kde-fred/k3bMamloc.tmp -joliet -hide-joliet-list /tmp/kde-fred/k3bbEoU1a.tmp -full-iso9660-filenames -iso-level 2 -path-list /tmp/kde-fred/k3bTsDelc.tmp

O que pode estar errado ? A mídia ou o meu gravado ?

Grato.