K3b problems . . . . . . .

[R. Koendering]

Can not burn a CD

read following output:

Devices
-----------------------
LITE-ON LTR-52327S QS0C (/dev/scd0, ) at /media/cdrom1 [CD-R; CD-RW; CD-ROM] 
[CD-ROM; CD-R; CD-RW] [SAO; TAO; RAW; SAO/R16; RAW/R96P; RAW/R96R]
TOSHIBA DVD-ROM SD-C2502 1011 (/dev/hdc, ) at /media/cdrom0 [CD-ROM; DVD-ROM] 
[DVD-ROM; CD-ROM] [None]

System
-----------------------
K3b Version: 0.11.23
KDE Version: 3.4.1
QT Version:  3.3.3
Kernel:      2.6.10-5-386

cdrecord
-----------------------
/usr/bin/cdrecord: Warning: Running on Linux-2.6.10-5-386
/usr/bin/cdrecord: There are unsettled issues with Linux-2.5 and newer.
/usr/bin/cdrecord: If you have unexpected problems, please try Linux-2.4 or 
Solaris.
/usr/bin/cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
/usr/bin/cdrecord: Permission denied. WARNING: Cannot set priority using 
setpriority().
/usr/bin/cdrecord: WARNING: This causes a high risk for buffer underruns.
scsidev: '2,0,0'
scsibus: 2 target: 0 lun: 0
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
/usr/bin/cdrecord: Permission denied. Cannot open '/dev/sg0'. Cannot open SCSI 
driver.
/usr/bin/cdrecord: For possible targets try 'cdrecord -scanbus'. Make sure you 
are root.
/usr/bin/cdrecord: For possible transport specifiers try 'cdrecord dev=help'.
/usr/bin/cdrecord: 
/usr/bin/cdrecord: For more information, install the cdrtools-doc
/usr/bin/cdrecord: package and 
read /usr/share/doc/cdrecord/README.ATAPI.setup .
Cdrecord-Clone 2.01a38 (i686-pc-linux-gnu) Copyright (C) 1995-2004 Joerg 
Schilling
NOTE: this version of cdrecord is an unofficial (modified) release of cdrecord
      and thus may have bugs that are not present in the original version.
      Please send bug reports and support requests to 
<cdrtools at packages.debian.org>.
      The original author should not be bothered with problems of this 
version.
TOC Type: 1 = CD-ROM

cdrecord comand:
-----------------------
/usr/bin/cdrecord.mmap -v gracetime=2 dev=2,0,0 speed=40 -tao 
driveropts=burnfree -eject -data /home/ruud/alinux.iso 


running this command in the Konsole:

NOTE: this version of cdrecord is an unofficial (modified) release of cdrecord
      and thus may have bugs that are not present in the original version.
      Please send bug reports and support requests to 
<cdrtools at packages.debian.org>.
      The original author should not be bothered with problems of this 
version.

/usr/bin/cdrecord: Warning: Running on Linux-2.6.10-5-386
/usr/bin/cdrecord: There are unsettled issues with Linux-2.5 and newer.
/usr/bin/cdrecord: If you have unexpected problems, please try Linux-2.4 or 
Solaris.
TOC Type: 1 = CD-ROM
/usr/bin/cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
/usr/bin/cdrecord: Permission denied. WARNING: Cannot set priority using 
setpriority().
/usr/bin/cdrecord: WARNING: This causes a high risk for buffer underruns.
scsidev: '2,0,0'
scsibus: 2 target: 0 lun: 0
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 
second.


Who can help?

Ruud - Netherlands