History on preferences reverts to use custom settings for history instead of never remember history

[John]

In Firefox preferences, the history reverts each time to use custom settings for history instead of never remember history. I'm using Firefox 13. I expect the history setting to remain on never remember history instead of use custom settings.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: firefox 13.0+build1-0ubuntu0.11.04.1
ProcVersionSignature: Ubuntu 2.6.38-15.60-generic-pae 2.6.38.8
Uname: Linux 2.6.38-15-generic-pae i686
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: VT1708BCE Analog [VT1708BCE Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: VT1708BCE Analog [VT1708BCE Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: john 2066 F.... pulseaudio
BuildID: 20120601175858
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfea78000 irq 42'
   Mixer name : 'VIA VT1708BCE'
   Components : 'HDA:1106e721,10192699,00100100'
   Controls : 28
   Simple ctrls : 17
Channel: release
Date: Fri Jun 8 02:57:39 2012
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
IpRoute:
 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.6 metric 1
 169.254.0.0/16 dev eth0 scope link metric 1000
 default via 192.168.1.1 dev eth0 proto static
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.

 vboxnet0 no wireless extensions.
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=13.0/20120601175858 (In use)
RelatedPackageVersions:
 adobe-flashplugin 11.2.202.235-0natty1
 icedtea-plugin 1.1.1-0ubuntu1~11.04.2
 gecko-mediaplayer 1.0.0-0ubuntu2
 totem-mozilla 2.32.0-0ubuntu10
RfKill:
 0: hci0: Bluetooth
  Soft blocked: no
  Hard blocked: no
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/18/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080014
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: G31T-M9
dmi.board.vendor: ECS
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: ECS
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd05/18/2009:svnECS:pnG31T-M9:pvr1.0:rvnECS:rnG31T-M9:rvr1.0:cvnECS:ct3:cvr1.0:
dmi.product.name: G31T-M9
dmi.product.version: 1.0
dmi.sys.vendor: ECS

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.