nautilus crashed with SIGSEGV in brasero_volume_get_gvolume()

[daouric]

*When burning a 1:1 copy of a cd/dvd, the application crashes once it's
finished with the image exctraction instead of prompting the user to
insert a blank cd.

*The bug is reproduced by starting brasero and using the "1:1 copy"
option. Trying to copy on a new disc in the drive holding the source
disc will then start the disc extraction. Brasero will eventually crash
after ejecting the source disc.

*Running brasero in debug mode with command line ("brasero -g") points
to a segmentation fault.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: brasero 2.32.1-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Fri Jul 29 01:00:35 2011
ExecutablePath: /usr/bin/nautilus
ProcCmdline: nautilus
ProcEnviron:
 LANGUAGE=fr_BE:en
 LANG=fr_BE.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0xb6afecb8: movzbl (%eax),%ecx
 PC (0xb6afecb8) ok
 source "(%eax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%ecx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: brasero
StacktraceTop:
 ?? () from /lib/i386-linux-gnu/libc.so.6
 brasero_volume_get_gvolume () from /usr/lib/libbrasero-media.so.1
 brasero_volume_get_mount_point () from /usr/lib/libbrasero-media.so.1
 brasero_volume_is_mounted () from /usr/lib/libbrasero-media.so.1
 ?? () from /usr/lib/libbrasero-burn.so.1
Title: nautilus crashed with SIGSEGV in brasero_volume_get_gvolume()
UpgradeStatus: Upgraded to natty on 2011-04-23 (96 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (<unknown>:1907): dee-WARNING **: Transaction from com.canonical.Unity.ApplicationsPlace.SectionsModel is in the past. Ignoring transaction.
 (<unknown>:1907): dee-WARNING **: Transaction from com.canonical.Unity.ApplicationsPlace.GroupsModel is in the past. Ignoring transaction.

[Apport retracing service (apport)]

StacktraceTop:
 __strcmp_ssse3 () at ../sysdeps/i386/i686/multiarch/strcmp-ssse3.S:74
 brasero_volume_get_gvolume (volume=0x9be00f0) at brasero-volume.c:103
 brasero_volume_get_mount_point (volume=0x9be00f0, error=0x0) at brasero-volume.c:175
 brasero_volume_is_mounted (volume=0x9be00f0) at brasero-volume.c:141
 brasero_burn_unmount (self=0x9eb7320, medium=0x9be00f0, error=0xbfce218c) at brasero-burn.c:319