Unable to use right mouse click in firefox

Can not use right mouse button to call the menu while in windows and desktop environment be available.
Sometimes it just flash and the menu quickly appear and disapear but not visible enough to see the content.

Thanks for any further help.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox 13.0.1+build1-0ubuntu0.12.04.1
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu10
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: extraymond 1972 F.... pulseaudio
 /dev/snd/controlC0: extraymond 1972 F.... pulseaudio
BuildID: 20120615112143
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xfcff4000 irq 16'
   Mixer name : 'Realtek ALC888'
   Components : 'HDA:10ec0888,14627599,00100202'
   Controls : 43
   Simple ctrls : 20
Card1.Amixer.info:
 Card hw:1 'NVidia'/'HDA NVidia at 0xfea7c000 irq 19'
   Mixer name : 'Nvidia GPU 14 HDMI/DP'
   Components : 'HDA:10de0014,10de0101,00100100'
   Controls : 24
   Simple ctrls : 4
Channel: release
Date: Tue Jun 26 14:36:48 2012
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
IpRoute:
 default via 192.168.1.1 dev eth0 proto static
 169.254.0.0/16 dev eth0 scope link metric 1000
 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.102 metric 1
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
Profiles: Profile0 (Default) - LastVersion=13.0.1/20120615112143 (In use)
RelatedPackageVersions:
 mozilla-libreoffice 1:3.5.4-0ubuntu1
 rhythmbox-mozilla 2.96-0ubuntu4
 totem-mozilla 3.0.1-0ubuntu21
RfKill:

RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/04/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V1.12
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 770-C45 (MS-7599)
dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.12:bd08/04/2010:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7599:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rn770-C45(MS-7599):rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0:
dmi.product.name: MS-7599
dmi.product.version: 1.0
dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD