I am unable to make an ISO disk, it fails and ejects every time

I had no difficulty making ISO disks with 1004 and previous iterations of ubuntu but not with 1010. I have tried 1010 and super OS neither works BUT both were copied to flash dongles without trouble. I got the same results with gnome baker and K3B so The problem does not appear to be specific to Brasero. In all cases they start and shortly crash. Here is the message I get from
Gnome Baker
 "Executing 'builtin_dd if=/home/paul/Desktop/Super_OS_10.10_64_bits.iso of=/dev/sr0 obs=32k seek=0'
/dev/sr0: "Current Write Speed" is 4.1x1352KBps.
:-[ WRITE@LBA=2920h failed with SK=0h/ASC=00h/ACQ=03h]: Input/output error
:-( write failed: Input/output error
/dev/sr0: flushing cache
/dev/sr0: closing track
/dev/sr0: closing disc"
 It seems there is some thing strange in the system . surely two ISO files frm different sources cant be faulty.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: brasero 2.32.0-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Fri Nov 5 00:05:52 2010
ExecutablePath: /usr/bin/brasero
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: brasero