Dock and Panel flickers whem cursor is moved over them.

[Tejas Chavan]

I used to have Ubuntu 11.10, then I upgraded to Ubuntu 12.04
It was running normally until I did the Software up to date.
Now when I restarted my PC, Dock and panel flickers as I move my cursor over them. Sometimes, some of the part of Dock disappears and appears again moments later.
Even while operating mouse on terminal, (right click to paste) flickering of terminal window appears.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-20.32-generic-pae 3.2.12
Uname: Linux 3.2.0-20-generic-pae i686
.tmp.unity.support.test.0:

ApportVersion: 1.95-0ubuntu1
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,compiztoolbox,resize,regex,vpswitch,move,mousepoll,grid,animation,wall,gnomecompat,fade,imgpng,place,workarounds,snap,expo,unitymtgrabhandles,scale,session,ezoom,unityshell]
CompositorRunning: compiz
CurrentDmesg: [ 36.804470] init: plymouth-stop pre-start process (1125) terminated with status 1
Date: Sun Mar 25 09:50:47 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120301)
MachineType: System manufacturer System Product Name
ProcEnviron:
 LANGUAGE=en_IN:en
 TERM=xterm
 LANG=en_IN
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-20-generic-pae root=UUID=dc6dda7b-04d2-4231-a0df-cd0420dbafcc ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/06/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0406
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5KPL-AM/PS
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: 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.:bvr0406:bd04/06/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5KPL-AM/PS:rvrx.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.7.2-0ubuntu1
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.