gnome-power-manager crashed with SIGSEGV in fclose()

Binary package hint: gnome-power-manager

Logged into guest session, logged out. Stuck at black screen/blinking line for 2 minutes.
Hit power button for reboot- skipped login screen, right to my desktop [with 2 files showing-NO panels anywhere].
Apport window pops up.
I switched to other blank workspaces.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: gnome-power-manager 2.32.0-2ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
NonfreeKernelModules: wl
Architecture: amd64
Date: Wed Mar 30 15:31:07 2011
ExecutablePath: /usr/bin/gnome-power-manager
GnomeSessionIdleInhibited: Unknown
GnomeSessionInhibitors: Failed to acquire
GnomeSessionSuspendInhibited: Unknown
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110329.1)
Lsusb: Error: command ['lsusb'] failed with exit code 1:
MachineType: Dell Inc. Inspiron 1546
ProcCmdline: gnome-power-manager
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=d804fc24-cef3-4cf1-8898-c419b488b44f ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7f56a046c0e4 <fclose+4>: mov (%rdi),%ecx
 PC (0x7f56a046c0e4) ok
 source "(%rdi)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%ecx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-power-manager
StacktraceTop:
 fclose () from /lib/x86_64-linux-gnu/libc.so.6
 ?? ()
 g_type_create_instance () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_newv () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: gnome-power-manager crashed with SIGSEGV in fclose()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 02/01/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A03
dmi.board.name: 0V2X0M
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA03:bd02/01/2010:svnDellInc.:pnInspiron1546:pvr:rvnDellInc.:rn0V2X0M:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1546
dmi.sys.vendor: Dell Inc.