Firefox popup menu crashes

After a while popup menus stops appearing.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox 13.0+build1-0ubuntu0.12.04.1
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: dernasherbrezon 1806 F.... pulseaudio
 /dev/snd/controlC0: dernasherbrezon 1806 F.... pulseaudio
BuildID: 20120601175215
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xfb200000 irq 52'
   Mixer name : 'Realtek ALC887'
   Components : 'HDA:10ec0887,1043840b,00100202'
   Controls : 39
   Simple ctrls : 20
Card1.Amixer.info:
 Card hw:1 'NVidia'/'HDA NVidia at 0xfb080000 irq 17'
   Mixer name : 'Nvidia GPU 1c HDMI/DP'
   Components : 'HDA:10de001c,00000000,00100100'
   Controls : 12
   Simple ctrls : 2
Channel: release
CurrentDmesg:
 [ 31.604030] r8169 0000:05:00.0: eth0: link up
 [ 31.604408] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
 [ 32.931187] init: plymouth-stop pre-start process (1488) terminated with status 1
 [ 42.118481] eth0: no IPv6 routers present
 [ 43.248263] process `skype' is using obsolete setsockopt SO_BSDCOMPAT
Date: Sat Jun 9 12:46:59 2012
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
IpRoute:
 default via 172.30.32.1 dev eth0 proto static
 169.254.0.0/16 dev eth0 scope link metric 1000
 172.30.32.0/23 dev eth0 proto kernel scope link src 172.30.33.124 metric 1
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
MostRecentCrashID: bp-d9ea6d6c-5cec-416a-a796-39be32120412
PrefErrors: Unexpected character before comma @ [Profile]/<email address hidden>/defaults/preferences/prefs.js:36
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=13.0/20120601175215 (In use)
RelatedPackageVersions:
 icedtea-6-plugin 1.2-2ubuntu1
 rhythmbox-mozilla 2.96-0ubuntu4
 totem-mozilla 3.0.1-0ubuntu21
RfKill:

RunningIncompatibleAddons: False
SourcePackage: firefox
SubmittedCrashIDs:
 bp-d9ea6d6c-5cec-416a-a796-39be32120412
 bp-292af627-3c8b-4024-bed6-a74c22120412
UpgradeStatus: Upgraded to precise on 2012-04-27 (43 days ago)
WifiSyslog:

dmi.bios.date: 07/25/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0905
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P8H67-M LE
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0905:bd07/25/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP8H67-MLE:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer