package firefox 10.0~a2~hg20111130r80713-0ubuntu1~umd1~lucid failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Robert]

upgraded from firefox to aurora all whent well untill the end of terminal script this showed up:
Errors were encountered while processing:
 firefox
 firefox-gnome-support
 firefox-branding
E: Sub-process /usr/bin/dpkg returned an error code (1)

I did this upgrade because after closing firefox it would not open again stated it was still running had to kill firefox.bin using system monitor every time. searching this problem i found that many others had the same problem. where is the solution?
some post marked solved didn't help me.

ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: firefox 10.0~a2~hg20111130r80713-0ubuntu1~umd1~lucid
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
Uname: Linux 2.6.31-14-generic i686
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.20.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: harpo 1780 F.... pulseaudio
 /dev/snd/controlC1: harpo 1780 F.... pulseaudio
BuildID: 20111130044833
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'ICH'/'Intel ICH with ALC655 at irq 23'
   Mixer name : 'Realtek ALC655 rev 0'
   Components : 'AC97a:414c4760'
   Controls : 41
   Simple ctrls : 26
Card1.Amixer.info:
 Card hw:1 'camera'/'USB camera at usb-0000:00:0b.0-1, full speed'
   Mixer name : 'USB Mixer'
   Components : 'USB045e:00f5'
   Controls : 3
   Simple ctrls : 2
Channel: aurora
Date: Thu Dec 1 21:04:13 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 1
EtcFirefoxSyspref: Cannot parse /etc/firefox/syspref.js - [Errno 2] No such file or directory: '/etc/firefox/syspref.js'
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
 pre-up wpa_supplicant -Bw -Dwext -wlan0 -c/etc/wpa_supplicant.conf
 post-down killall -q wpa_supplicant
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
IpRoute:
 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.76 metric 2
 169.254.0.0/16 dev wlan0 scope link metric 1000
 default via 192.168.1.254 dev wlan0 proto static
NoProfiles: True
PciNetwork:

RfKill:

RunningIncompatibleAddons: False
SourcePackage: firefox
Title: package firefox 10.0~a2~hg20111130r80713-0ubuntu1~umd1~lucid failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
dmi.bios.date: 01/13/2006
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: K8MC51G
dmi.board.vendor: First International Computer, Inc.
dmi.board.version: PCB 1.x
dmi.chassis.asset.tag: Asset Tag Number xxxxxx
dmi.chassis.type: 3
dmi.chassis.vendor: Manufactory Name
dmi.chassis.version: Version xx
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd01/13/2006:svnGateway:pnT3418:pvrSYS-xxxxxx:rvnFirstInternationalComputer,Inc.:rnK8MC51G:rvrPCB1.x:cvnManufactoryName:ct3:cvrVersionxx:
dmi.product.name: T3418
dmi.product.version: SYS-xxxxxx
dmi.sys.vendor: Gateway

[J. Austin Rodriguez (jeanaustinr)]

Hi! Is this problem still occurring on Ubuntu 12.10 with the latest version of Mozilla Firefox?

[dino99 (9d9)]

This version has expired some times ago, and no backport is expected as there is no 'security' reported problem