upowerd crashed with SIGSEGV in node_detach()

[fay]

ubuntu 12.04

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: upower 0.9.15-1
ProcVersionSignature: Ubuntu 3.2.0-4.10-generic 3.2.0-rc5
Uname: Linux 3.2.0-4-generic i686
ApportVersion: 1.90-0ubuntu1
Architecture: i386
CrashCounter: 1
Date: Sun Jul 1 20:46:26 2012
ExecutablePath: /usr/lib/upower/upowerd
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcCmdline: /usr/lib/upower/upowerd
ProcEnviron:

SegvAnalysis:
 Segfault happened at: 0xfa0958 <node_detach+56>: mov 0x20(%esi),%eax
 PC (0x00fa0958) ok
 source "0x20(%esi)" (0x00000021) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: upower
StacktraceTop:
 node_detach () from /usr/lib/libplist.so.1
 ?? () from /usr/lib/libplist.so.1
 ?? ()
 ?? ()
 ?? ()
Title: upowerd crashed with SIGSEGV in node_detach()
UpgradeStatus: Upgraded to precise on 2012-06-20 (11 days ago)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 node_detach () from /usr/lib/libplist.so.1
 ?? () from /usr/lib/libplist.so.1
 ?? ()
 ?? ()
 ?? ()