[Bug 949193] Re: update-manager crashed with SIGSEGV in type_check_is_value_type_U()

[RedSingularity]

Marking public since there is no private information in the report.
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https://bugs.launchpad.net/bugs/949193

Title:
  update-manager crashed with SIGSEGV in type_check_is_value_type_U()

Status in “update-manager” package in Ubuntu:
  Incomplete

Bug description:
  Update manager is not responsive and often showing different updates.
  Not correctly showing progress when installing and hangs often.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.7
  ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
  Uname: Linux 3.2.0-18-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 1.94.1-0ubuntu1
  Architecture: amd64
  CrashCounter: 1
  Date: Wed Mar  7 18:12:29 2012
  ExecutablePath: /usr/bin/update-manager
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1331139893
   com.ubuntu.update-manager show-details true
   com.ubuntu.update-manager window-height 621
   com.ubuntu.update-manager window-width 600
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python /usr/bin/update-manager
  SegvAnalysis:
   Segfault happened at: 0x7fc29b49c504 <g_type_check_value+52>:	testb  $0x8,0x16(%rbx)
   PC (0x7fc29b49c504) ok
   source "$0x8" ok
   destination "0x16(%rbx)" (0x12243616) not located in a known VMA region (needed writable region)!
  SegvReason: writing unknown VMA
  Signal: 11
  SourcePackage: update-manager
  StacktraceTop:
   g_type_check_value () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_value_unset () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
   g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  Title: update-manager crashed with SIGSEGV in g_type_check_value()
  UpgradeStatus: Upgraded to precise on 2012-03-07 (0 days ago)
  UserGroups: adm admin cdrom dialout lp lpadmin plugdev sambashare

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