Comment 1 for bug 294455

I have the exact same problem.
100% repeatable.

Ubuntu 8.10 (intrepid) amd-64
Gnome: 2.24.1
Kernel: 2.6.27-9-generic
Brasero: 8.2

Here's the tail of the error log:
BraseroGrowisofs called brasero_job_start_progress
BraseroGrowisofs stderr: 99.94% done, estimate finish Sat Nov 29 07:29:36 2008
BraseroGrowisofs Called brasero_job_set_progress (0.999400)
BraseroGrowisofs called brasero_job_get_current_action
BraseroGrowisofs called brasero_job_set_current_action
BraseroGrowisofs called brasero_job_start_progress
BraseroGrowisofs stderr: Total translation table size: 0
BraseroGrowisofs stderr: Total rockridge attributes bytes: 809
BraseroGrowisofs stderr: Total directory bytes: 0
BraseroGrowisofs stderr: Path table size(bytes): 10
BraseroGrowisofs stderr: Done with: The File(s) Block(s) 1961048
BraseroGrowisofs stderr: Writing: Ending Padblock Start Block 1961079
BraseroGrowisofs stderr: Done with: Ending Padblock Block(s) 150
BraseroGrowisofs stderr: Max brk space used 0
BraseroGrowisofs stderr: 1961229 extents written (3830 MB)
BraseroGrowisofs stderr: /dev/scd1: flushing cache
BraseroGrowisofs Called brasero_job_set_progress (1.000000)
BraseroGrowisofs called brasero_job_set_current_action
BraseroGrowisofs stderr: /dev/scd1: closing track
BraseroGrowisofs stderr: /dev/scd1: closing disc
BraseroGrowisofs stdout: HUP
BraseroGrowisofs stderr: HUP
BraseroGrowisofs process finished with status 0
BraseroGrowisofs called brasero_job_get_fd_out
BraseroGrowisofs called brasero_job_get_action
BraseroGrowisofs finished successfully session
BraseroGrowisofs stopping
BraseroGrowisofs got killed
Session error : the disc could not be mounted (max attemps reached) (brasero_burn_record burn.c:2524)