Yes, this is the same bug that i'm facing, and sorry for the late reply !

On Wed, Aug 24, 2011 at 5:26 PM, Omer Akram <email address hidden> wrote:

> Pratheek  could you check if bug 761219 is what you are facing?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/789510
>
> Title:
>  Unity panel get struck and doesn't auto hide
>
> Status in Unity:
>  Incomplete
> Status in “unity” package in Ubuntu:
>  Incomplete
>
> Bug description:
>  Binary package hint: unity
>
>  Sometimes the unity panel doesn't hide itself even if the application
>  at use is maximized to fit the full screen, also some times the
>  "Unity-panel-service" takes up excessive memory, and there by
>  overloading the processor and lead to Kernel panic, and then it
>  automatically shuts down(crashing the OS ! ).
>
>  ProblemType: Bug
>  DistroRelease: Ubuntu 11.04
>  Package: unity 3.8.12-0ubuntu1
>  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
>  Uname: Linux 2.6.38-8-generic i686
>  NonfreeKernelModules: fglrx
>  Architecture: i386
>  CompizPlugins:
> [core,bailer,detection,composite,opengl,decor,vpswitch,commands,mousepoll,gnomecompat,place,compiztoolbox,imgpng,firepaint,wall,regex,grid,snap,move,obs,resize,showmouse,unitymtgrabhandles,animation,session,expo,workarounds,ezoom,staticswitcher,fade,scale,unityshell]
>  CompositorRunning: compiz
>  Date: Sat May 28 16:08:50 2011
>  DistUpgraded: Fresh install
>  DistroCodename: natty
>  DistroVariant: ubuntu
>  DkmsStatus: fglrx, 8.840, 2.6.38-8-generic, i686: installed
>  ExecutablePath: /usr/lib/unity/unity-panel-service
>  GraphicsCard:
>   ATI Technologies Inc RV610 video device [Radeon HD 2400 PRO] [1002:94c3]
> (prog-if 00 [VGA controller])
>     Subsystem: Dell Device [1028:0402]
>  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386
> (20110427.1)
>  InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Release i386
> (20110427.1)
>  InstallationMedia__: Ubuntu 11.04 "Natty Narwhal" - Release i386
> (20110427.1)
>  JockeyStatus: xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver
> (Proprietary, Enabled, In use)
>  MachineType: Dell Inc. Inspiron 530s
>  ProcEnviron:
>   SHELL=/bin/bash
>   LC_MESSAGES=en_IN.UTF-8
>   LANGUAGE=en_IN:en
>   LANG=en_IN
>  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic
> root=UUID=d2ec3123-39db-4b93-ae0a-b53ee268921d ro quiet splash vt.handoff=7
>  ProcVersionSignature_: Ubuntu 2.6.38-8.42-generic 2.6.38.2
>  ProcVersionSignature__: Ubuntu 2.6.38-8.42-generic 2.6.38.2
>  Renderer: Unknown
>  SourcePackage: unity
>  UpgradeStatus: No upgrade log present (probably fresh install)
>  dmi.bios.date: 02/24/2009
>  dmi.bios.vendor: Dell Inc.
>  dmi.bios.version: 1.0.18
>  dmi.board.name: 0RY007
>  dmi.board.vendor: Dell Inc.
>  dmi.chassis.type: 3
>  dmi.chassis.vendor: Dell Inc.
>  dmi.chassis.version: OEM
>  dmi.modalias:
> dmi:bvnDellInc.:bvr1.0.18:bd02/24/2009:svnDellInc.:pnInspiron530s:pvr:rvnDellInc.:rn0RY007:rvr:cvnDellInc.:ct3:cvrOEM:
>  dmi.product.name: Inspiron 530s
>  dmi.sys.vendor: Dell Inc.
>  version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
>  version.fglrx-installer: fglrx-installer N/A
>  version.libdrm2: libdrm2 2.4.23-1ubuntu6
>  version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
>  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
>  version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
>  version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
>  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
>  version.xserver-xorg-video-intel: xserver-xorg-video-intel
> 2:2.14.0-4ubuntu7.1
>  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
> 1:0.0.16+git20110107+b795ca6e-0ubuntu7
>
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>