problemas con cd-rw en fc5

[juanlu]

Hola tengo instalado el fc5 y tengo un problema con la el borrado y la 
grabación de cd-rw, con los DVD me va muy bien pero no consigo borrar los 
cd-rw ni grabarlo tampoco.
Cuando lo intento, usando el k3b y como root, me da el siguiente error.

System
-----------------------
K3b Version: 0.12.16

KDE Version: 3.5.4-0.3.fc5 Fedora-Core
QT Version:  3.3.6
Kernel:      2.6.18-1.2239.fc5
Devices
-----------------------
HL-DT-ST DVD-ROM GDR8163B 0L15 (/dev/hdb, ) at  [CD-ROM; DVD-ROM] [DVD-ROM; 
CD-ROM] [None]

HL-DT-ST DVDRAM GSA-4040B A300 (/dev/hdc, ) at  [CD-R; CD-RW; CD-ROM; DVD-ROM; 
DVD-RAM; DVD-R; DVD-RW; DVD+R; DVD+RW] [DVD-ROM; DVD-R Sequential; DVD-RAM; 
DVD-RW Restricted Overwrite; DVD-RW Sequential; DVD+RW; DVD+R; CD-ROM; CD-R; 
CD-RW] [SAO; TAO; RAW; SAO/R96P; SAO/R96R; RAW/R16; RAW/R96P; RAW/R96R; 
Restricted Overwrite]
Used versions
-----------------------
cdrecord: 2.1.1a03

cdrecord command:
-----------------------
/usr/bin/cdrecord -v gracetime=2 dev=/dev/hdc speed=4 -tao 
driveropts=burnfree -eject blank=fast -force 

cdrecord
-----------------------
scsidev: '/dev/hdc'

devname: '/dev/hdc'
scsibus: -2 target: -2 lun: -2
Linux sg driver version: 3.5.27
/usr/bin/cdrecord: Warning: using inofficial libscg transport code version 
(schily - Red Hat-scsi-linux-sg.c-1.85-RH '@(#)scsi-linux-sg.c 1.85 05/05/16 
Copyright 1997 J. Schilling').
SCSI buffer size: 64512
Cdrecord-Clone 2.01.01a03-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2005 
Jörg Schilling
NOTE: This version contains the OSS DVD extensions for cdrtools and thus may
      have bugs related to DVD issues that are not present in the original
      cdrtools. Please send bug reports or support requests to
      http://bugzilla.redhat.com/bugzilla The original cdrtools author should
      not be bothered with problems in this version.
TOC Type: 1 = CD-ROM
Using libscg version 'schily-0.8'.
Driveropts: 'burnfree'
atapi: 1
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   : 
Vendor_info    : 'HL-DT-ST'
Identifikation : 'DVDRAM GSA-4040B'
Revision       : 'A300'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Current: 0x000A
Profile: 0x0012 
Profile: 0x0011 
Profile: 0x0014 
Profile: 0x0013 
Profile: 0x001A 
Profile: 0x001B 
Profile: 0x0010 
Profile: 0x0009 
Profile: 0x000A (current)
Profile: 0x0008 (current)
Profile: 0x0002 
Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
Driver flags   : MMC-3 SWABAUDIO BURNFREE 
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
Drive buf size : 1204224 = 1176 KB
Drive DMA Speed: 10575 kB/s 60x CD 7x DVD
/usr/bin/cdrecord: Trying to use ultra high speed+ medium on a writer which is 
not
compatible with ultra high speed+ media.
Current Secsize: 2048
ATIP info from disk:
  Indicated writing power: 5
  Reference speed: 2
  Is not unrestricted
  Is erasable
  ATIP start of lead in:  -11635 (97:26/65)
  ATIP start of lead out: 337350 (75:00/00)
  1T speed low:  0 (reserved val  0) 1T speed high:  4
  2T speed low:  8 2T speed high:  0 (reserved val 10)
  power mult factor: 4 6
  recommended erase/write power: 3
  A1 values: 02 4C B0
  A2 values: 4A C8 36
Disk type:    Phase change
Manuf. index: 3
Manufacturer: CMC Magnetics Corporation
Speed set to 706 KB/s

Alguien puede ayudarme
Gracias