package firefox 7.0.1+build1+nobinonly-0ubuntu0.11.04.1 failed to install/upgrade: ErrorMessage: package firefox is already installed and configured

[cristina amazonas]

i have no clue

ProblemType: Package
DistroRelease: Ubuntu 11.10
Package: firefox 7.0.1+build1+nobinonly-0ubuntu0.11.04.1
ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: cristina 1423 F.... pulseaudio
 /dev/snd/controlC0: cristina 1423 F.... pulseaudio
BuildID: 20110928224508
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfea78000 irq 44'
   Mixer name : 'Realtek ALC888'
   Components : 'HDA:10ec0888,14627529,00100001'
   Controls : 24
   Simple ctrls : 14
Card1.Amixer.info:
 Card hw:1 'default'/'USB AUDIO at usb-0000:00:1d.0-2, full speed'
   Mixer name : 'USB Mixer'
   Components : 'USB1130:6901'
   Controls : 2
   Simple ctrls : 1
Channel: release
Date: Wed Oct 19 02:36:52 2011
ErrorMessage: ErrorMessage: package firefox is already installed and configured
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
IpRoute:
 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.64 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.
NoProfiles: True
PulseSinks: Error: command ['pacmd', 'list-sinks'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
PulseSources: Error: command ['pacmd', 'list-sources'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RfKill:

RunningIncompatibleAddons: False
SourcePackage: dpkg
Title: package firefox 7.0.1+build1+nobinonly-0ubuntu0.11.04.1 failed to install/upgrade: ErrorMessage: package firefox is already installed and configured
UpgradeStatus: Upgraded to oneiric on 2011-10-19 (0 days ago)
dmi.bios.date: 03/26/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V2.4
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: G31M3-L V2(MS-7529)
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.:bvrV2.4:bd03/26/2009:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7529:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rnG31M3-LV2(MS-7529):rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0:
dmi.product.name: MS-7529
dmi.product.version: 1.0
dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD

[Raphaël Hertzog (hertzog)]

Thank you for taking the time to report this bug and helping to make
Ubuntu better. It seems that there was an error on your system when
trying to install a particular package. Please execute the following
command, as it will clear your package cache, in a terminal:

sudo apt-get clean

Then try performing the update again. This will likely resolve your
issue, but the failure could be caused by filesystem or memory
corruption. So please also run a fsck on your filesystem(s) and a
memory test. Thanks in advance!