package linux-image-3.2.0-23-generic 3.2.0-23.36 failed to install/upgrade: 無法移除 `/usr/share/doc/linux-image-3.2.0-23-generic/changelog.Debian.gz': 唯讀的檔案系統

Not know why it triggers 3 times of such problem.

Before I "apt-get --purge linux-image-3.2.0-23-generic", I experienced "root become read-only" and reboot.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-23-generic 3.2.0-23.36
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Uname: Linux 3.2.0-25-generic x86_64
NonfreeKernelModules: wl fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu8
AptOrdering:
 linux-headers-3.2.0-23-generic: Purge
 linux-headers-3.2.0-23: Purge
 linux-image-3.2.0-23-generic: Purge
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: jie 2057 F.... pulseaudio
 /dev/snd/controlC0: jie 2057 F.... pulseaudio
 /dev/snd/pcmC0D0p: jie 2057 F...m pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xd6100000 irq 43'
   Mixer name : 'Conexant CX20585'
   Components : 'HDA:14f15069,1179fdd0,00100302'
   Controls : 16
   Simple ctrls : 9
Card1.Amixer.info:
 Card hw:1 'Generic'/'HD-Audio Generic at 0xd6020000 irq 44'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100200'
   Controls : 6
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Sun Jun 24 14:22:30 2012
ErrorMessage: 無法移除 `/usr/share/doc/linux-image-3.2.0-23-generic/changelog.Debian.gz': 唯讀的檔案系統
HibernationDevice: RESUME=UUID=5901e92c-cefe-409c-91d6-605869d93938
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MachineType: TOSHIBA Satellite L640
ProcFB:

ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-25-generic root=/dev/mapper/hostname-root ro quiet splash acpi=force
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions: grub-pc 1.99-21ubuntu3.1
RfKill:
 0: brcmwl-0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
StagingDrivers: mei
Title: package linux-image-3.2.0-23-generic 3.2.0-23.36 failed to install/upgrade: 無法移除 `/usr/share/doc/linux-image-3.2.0-23-generic/changelog.Debian.gz': 唯讀的檔案系統
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/06/2010
dmi.bios.vendor: INSYDE
dmi.bios.version: 1.50
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: Intel Corp.
dmi.board.version: Base Board Version
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: OEM Chassis Manufacturer
dmi.chassis.version: OEM Chassis Version
dmi.modalias: dmi:bvnINSYDE:bvr1.50:bd07/06/2010:svnTOSHIBA:pnSatelliteL640:pvrPSK0NT-00Q003:rvnIntelCorp.:rnBaseBoardProductName:rvrBaseBoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion:
dmi.product.name: Satellite L640
dmi.product.version: PSK0NT-00Q003
dmi.sys.vendor: TOSHIBA