Confirmed that ISO image not corrupt following instructions from here:
http://fedoraproject.org/en/verify

Result of: sha1sum -c SHA1SUM
Fedora-9-i386-disc1.iso: OK

Installed K3b [1.0.5] from Synaptic to check whether issue lies with
Brasero or the writer.

For reference, the DVD-RW is shown as:  TSSTcorp CD/DVDW SH-S182M
The additional DVDROM is shown as:              SONY DVD-ROM DDU1613

Using known good CD-RW media, attempted another burn using K3b (disc had
been pre-used [once], but not tested with so far... formatted OK by
K3b). Noted that some media used in earlier Brasero tests are now
completely unusable [two 12x CD-RWs, previous media from same pack has
been fine], hence the use of a previously untested known good disc. Disc
tested burnt at 4x speed. Verify warned that the disc differed from
original - no additional details, though. Log attached.

Ejected and reinserted CD-RW which mounted fine. No errors in
/var/log/syslog this time:

Nov 22 16:31:35 alias kernel: [13074.980558] cdrom: sr0: mrw address space DMA 
selected
Nov 22 16:31:35 alias kernel: [13074.994909] cdrom open: mrw_status 'not mrw'
Nov 22 16:31:35 alias kernel: [13075.047931] cdrom: sr0: mrw address space DMA 
selected
Nov 22 16:31:35 alias kernel: [13075.051297] cdrom open: mrw_status 'not mrw'
Nov 22 16:31:35 alias kernel: [13075.313935] UDF-fs: No VRS found
Nov 22 16:31:35 alias kernel: [13075.407875] ISO 9660 Extensions: Microsoft 
Joliet Level 3
Nov 22 16:31:35 alias kernel: [13075.633472] ISO 9660 Extensions: RRIP_1991A

Unfortunately this doesn't prove a problem with the media, drive,
Brasero or one of the underlying components but it might be worth doing
a test with K3b using new media and seeing what happens.

** Attachment added: "k3b_log.txt"
   http://launchpadlibrarian.net/19862158/k3b_log.txt

-- 
ISO burn on Intrepid with Brasero will not mount
https://bugs.launchpad.net/bugs/295795
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