upowerd crashed with SIGSEGV in dbus_connection_send()

[kotoku]

Live boot Nodezero live system

ProblemType: Crash
DistroRelease: Ubuntu 10.04
Package: upower 0.9.1-1
ProcVersionSignature: Ubuntu 2.6.32-25.44-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic i686
Architecture: i386
Date: Wed Jun 29 17:04:20 2011
ExecutablePath: /usr/lib/upower/upowerd
LiveMediaBuild: Custom Live CD - Release i386
ProcCmdline: /usr/lib/upower/upowerd
ProcEnviron:

SegvAnalysis:
 Segfault happened at: 0x6c87f8 <dbus_connection_send+40>: mov 0x4(%esi),%eax
 PC (0x006c87f8) ok
 source "0x4(%esi)" (0x00000014) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: upower
StacktraceTop:
 dbus_connection_send () from /lib/libdbus-1.so.3
 dbus_g_method_return () from /usr/lib/libdbus-glib-1.so.2
 ?? ()
 g_cclosure_marshal_VOID__POINTER ()
 ?? () from /usr/lib/libdbus-glib-1.so.2
Title: upowerd crashed with SIGSEGV in dbus_connection_send()
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 dbus_connection_send () from /lib/libdbus-1.so.3
 invoke_object_method (object=<value optimized out>,
 up_daemon_suspend_allowed (daemon=0x9d98000,
 IA__g_cclosure_marshal_VOID__POINTER (closure=0xbfa87624,
 object_registration_message (connection=0x9d8ae58,