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might be caused by some outdated packages which were installed on your system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 1:4.5.2-6ubuntu4, latest version: 1:4.5.2-6ubuntu5
libc6-dbg: installed version 2.13-0ubuntu7, latest version: 2.13-0ubuntu9
libx11-xcb1: installed version 2:1.4.1-5ubuntu1, latest version: 2:1.4.1-5ubuntu2
compiz-core: installed version 1:0.9.4-0ubuntu7, latest version: 1:0.9.4git20110322-0ubuntu2
libxau6: installed version 1:1.0.6-1, latest version: 1:1.0.6-1ubuntu1
libxcomposite1: installed version 1:0.4.3-1, latest version: 1:0.4.3-1ubuntu1
libacl1: installed version 2.2.49-4ubuntu1, latest version: 2.2.49-4ubuntu2
libxcomposite1-dbg: installed version 1:0.4.3-1, latest version: 1:0.4.3-1ubuntu1
libpam0g: installed version 1.1.2-2ubuntu4, latest version: 1.1.2-2ubuntu5
libgcrypt11-dbg: installed version 1.4.6-4, latest version: 1.4.6-4ubuntu2
libpam-modules-bin: installed version 1.1.2-2ubuntu4, latest version: 1.1.2-2ubuntu5
libpcre3-dbg: installed version 8.12-3ubuntu1, latest version: 8.12-3ubuntu2
gcc-4.5-base: installed version 4.5.2-6ubuntu4, latest version: 4.5.2-6ubuntu5
libgcc1-dbg: installed version 1:4.5.2-6ubuntu4, latest version: 1:4.5.2-6ubuntu5
libpcre3: installed version 8.12-3ubuntu1, latest version: 8.12-3ubuntu2
libpam-modules: installed version 1.1.2-2ubuntu4, latest version: 1.1.2-2ubuntu5
libxcb1-dbg: installed version 1.7-2, latest version: 1.7-2ubuntu1
libxau6-dbg: installed version 1:1.0.6-1, latest version: 1:1.0.6-1ubuntu1
libglib2.0-0: installed version 2.28.3-0ubuntu1, latest version: 2.28.4-0ubuntu2
libxcb1: installed version 1.7-2, latest version: 1.7-2ubuntu1
libgcrypt11: installed version 1.4.6-4, latest version: 1.4.6-4ubuntu2
libc-bin: installed version 2.13-0ubuntu7, latest version: 2.13-0ubuntu9
libx11-6-dbg: installed version 2:1.4.1-5ubuntu1, latest version: 2:1.4.1-5ubuntu2
libxdmcp6: installed version 1:1.1.0-1, latest version: 1:1.1.0-1ubuntu1
libx11-data: installed version 2:1.4.1-5ubuntu1, latest version: 2:1.4.1-5ubuntu2
libxdmcp6-dbg: installed version 1:1.1.0-1, latest version: 1:1.1.0-1ubuntu1
libstdc++6: installed version 4.5.2-6ubuntu4, latest version: 4.5.2-6ubuntu5
libx11-6: installed version 2:1.4.1-5ubuntu1, latest version: 2:1.4.1-5ubuntu2
zlib1g-dbg: installed version 1:1.2.3.4.dfsg-3ubuntu2, latest version: 1:1.2.3.4.dfsg-3ubuntu3
zlib1g: installed version 1:1.2.3.4.dfsg-3ubuntu2, latest version: 1:1.2.3.4.dfsg-3ubuntu3
libc6: installed version 2.13-0ubuntu7, latest version: 2.13-0ubuntu9
libglib2.0-0-dbg: installed version 2.28.3-0ubuntu1, latest version: 2.28.4-0ubuntu2
libx11-xcb1-dbg: installed version 2:1.4.1-5ubuntu1, latest version: 2:1.4.1-5ubuntu2
libselinux1: installed version 2.0.96-1ubuntu1, latest version: 2.0.96-1ubuntu2
libuuid1: installed version 2.17.2-9.1ubuntu3, latest version: 2.17.2-9.1ubuntu4


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!