Thank you for your report! 

However, processing it in order to get sufficient information for the
developers failed (it does not generate an useful symbolic stack trace). This
might be caused by some outdated packages which were installed on your system
at the time of the report:

libgcc1: installed version 1:4.5.1-1ubuntu2, latest version: 1:4.5.1-5ubuntu1
libavahi-common3: installed version 0.6.25-1ubuntu6, latest version: 0.6.27-2ubuntu1
mountall: installed version 2.15, latest version: 2.17
libudev0: installed version 151-12, latest version: 161+git20100827-1
libpolkit-gobject-1-0: installed version 0.96-2, latest version: 0.96-2ubuntu1
policykit-1: installed version 0.96-2, latest version: 0.96-2ubuntu1
python2.6: installed version 2.6.6~rc1-1ubuntu1, latest version: 2.6.6-1ubuntu1
python-minimal: installed version 2.6.5-12ubuntu1, latest version: 2.6.5-13ubuntu1
nautilus-data: installed version 1:2.31.6-0ubuntu3.1, latest version: 1:2.31.90-0ubuntu3
libcups2: installed version 1.4.4-3, latest version: 1.4.4-3ubuntu1
libpango1.0-common: installed version 1.29.0~git20100708.e94a21a9-0ubuntu1~10.04~ricotz1, latest version: 1.28.1-1ubuntu3
tzdata: installed version 2010k-0ubuntu1, latest version: 2010l-1
nautilus: installed version 1:2.31.6-0ubuntu3.1, latest version: 1:2.31.90-0ubuntu3
libplymouth2: installed version 0.8.2-2ubuntu3, latest version: 0.8.2-2ubuntu4
libgtk2.0-common: installed version 2.21.5-1ubuntu6, latest version: 2.21.7-1ubuntu1
klibc-utils: installed version 1.5.18-1, latest version: 1.5.20-1
libpango1.0-0: installed version 1.29.0~git20100708.e94a21a9-0ubuntu1~10.04~ricotz1, latest version: 1.28.1-1ubuntu3
libgdu0: installed version 2.30.1-1, latest version: 2.30.1-2
python: installed version 2.6.5-12ubuntu1, latest version: 2.6.5-13ubuntu1
libdbus-glib-1-2: installed version 0.86-1, latest version: 0.88-2
libpam0g: installed version 1.1.1-3ubuntu3, latest version: 1.1.1-4ubuntu1
libglib2.0-0: installed version 2.25.13-1ubuntu1, latest version: 2.25.15-0ubuntu2
gcc-4.5-base: installed version 4.5.1-1ubuntu2, latest version: 4.5.1-5ubuntu1
libgail18: installed version 2.21.5-1ubuntu6, latest version: 2.21.7-1ubuntu1
libklibc: installed version 1.5.18-1, latest version: 1.5.20-1
libglib2.0-data: installed version 2.25.13-1ubuntu1, latest version: 2.25.15-0ubuntu2
cpp-4.4: installed version 4.4.4-8ubuntu2, latest version: 4.4.4-14ubuntu1
libc-bin: installed version 2.12-0ubuntu5, latest version: 2.12.1-0ubuntu4
gconf2: installed version 2.31.7-0ubuntu3, latest version: 2.31.91-0ubuntu3
libfreetype6: installed version 2.4.2-1, latest version: 2.4.2-2
passwd: installed version 1:4.1.4.2-1ubuntu2, latest version: 1:4.1.4.2-1ubuntu3
desktop-file-utils: installed version 0.16-0ubuntu2, latest version: 0.16-0ubuntu4
libindicator0: installed version 0.3.11-0ubuntu2, latest version: 0.3.12-0ubuntu1
dpkg: installed version 1.15.8.2ubuntu4, latest version: 1.15.8.4ubuntu3
libparted0debian1: installed version 2.2-7ubuntu1, latest version: 2.3-2ubuntu1
gcc-4.4-base: installed version 4.4.4-8ubuntu2, latest version: 4.4.4-14ubuntu1
libgnome-keyring0: installed version 2.30.1-1ubuntu1, latest version: 2.31.91-0ubuntu1
libdevmapper1.02.1: installed version 2:1.02.39-1ubuntu4, latest version: 2:1.02.39-1ubuntu5
udev: installed version 151-12, latest version: 161+git20100827-1
ifupdown: installed version 0.6.10ubuntu2, latest version: 0.6.10ubuntu3
libdbusmenu-gtk1: installed version 0.3.10-0ubuntu1, latest version: 0.3.13-0ubuntu1
libavahi-glib1: installed version 0.6.25-1ubuntu6, latest version: 0.6.27-2ubuntu1
libpixman-1-0: installed version 0.18.2-1ubuntu1, latest version: 0.18.4-1
policykit-1-gnome: installed version 0.96-2ubuntu2, latest version: 0.96-2ubuntu4
initramfs-tools: installed version 0.97.2ubuntu2, latest version: 0.98.1ubuntu1
libstdc++6: installed version 4.5.1-1ubuntu2, latest version: 4.5.1-5ubuntu1
libavahi-common-data: installed version 0.6.25-1ubuntu6, latest version: 0.6.27-2ubuntu1
libc6: installed version 2.12-0ubuntu5, latest version: 2.12.1-0ubuntu4
libnautilus-extension1: installed version 1:2.31.6-0ubuntu3.1, latest version: 1:2.31.90-0ubuntu3
libnih1: installed version 1.0.2-1ubuntu1, latest version: 1.0.2-1ubuntu2
libpam-modules: installed version 1.1.1-3ubuntu3, latest version: 1.1.1-4ubuntu1
libgtk2.0-0: installed version 2.21.5-1ubuntu6, latest version: 2.21.7-1ubuntu1
busybox-initramfs: installed version 1:1.15.3-1ubuntu1, latest version: 1:1.15.3-1ubuntu4
libavahi-client3: installed version 0.6.25-1ubuntu6, latest version: 0.6.27-2ubuntu1
libdbusmenu-glib1: installed version 0.3.10-0ubuntu1, latest version: 0.3.13-0ubuntu1
libsqlite3-0: installed version 3.7.0.1-1, latest version: 3.7.2-1
libcomerr2: installed version 1.41.12-1ubuntu1, latest version: 1.41.12-1ubuntu2
python2.6-minimal: installed version 2.6.6~rc1-1ubuntu1, latest version: 2.6.6-1ubuntu1
libpolkit-agent-1-0: installed version 0.96-2, latest version: 0.96-2ubuntu1
libpolkit-backend-1-0: installed version 0.96-2, latest version: 0.96-2ubuntu1
initramfs-tools-bin: installed version 0.97.2ubuntu2, latest version: 0.98.1ubuntu1
plymouth: installed version 0.8.2-2ubuntu3, latest version: 0.8.2-2ubuntu4
liblaunchpad-integration1: installed version 0.1.37, latest version: 0.1.38
libatk1.0-0: installed version 1.30.0+git20100618.68f7e465-0ubuntu1~10.04~ricotz2, latest version: 1.30.0-1ubuntu3
gconf2-common: installed version 2.31.7-0ubuntu3, latest version: 2.31.91-0ubuntu3
libgudev-1.0-0: installed version 1:151-12, latest version: 1:161+git20100827-1
libnih-dbus1: installed version 1.0.2-1ubuntu1, latest version: 1.0.2-1ubuntu2
libgnome-desktop-2-17: installed version 1:2.31.6-0ubuntu1, latest version: 1:2.31.90-0ubuntu2
libgconf2-4: installed version 2.31.7-0ubuntu3, latest version: 2.31.91-0ubuntu3


Please upgrade your system to the latest package versions. If you still
encounter the crash, please file a new report.

Thank you for your understanding, and sorry for the inconvenience!