Login graphics and notifications remain on screen after login

[Grimalkin]

Problem occured after upgrade to Ubuntu 13.04.
Login graphics and wireless notification remain on screen and can not be removed.
Ubuntu 13.04 appears to be stable.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
NonfreeKernelModules: wl
.tmp.unity.support.test.0:

ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,snap,obs,imgjpeg,imgpng,unitymtgrabhandles,mousepoll,resize,grid,gnomecompat,place,vpswitch,regex,move,session,wall,animation,fade,scale,expo,workarounds,ezoom,unityshell]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDmesg:
 [ 24.732365] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
 [ 24.732592] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Date: Sun Apr 28 20:40:42 2013
DistUpgraded: 2013-04-26 12:37:44,594 WARNING no activity on terminal for 300 seconds (Preparing to configure cups)
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus: bcmwl, 6.20.155.1+bdcom, 3.8.0-19-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:21e3]
 Advanced Micro Devices [AMD] nee ATI Whistler [Radeon HD 6600M/6700M/7600M Series] [1002:6741] (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:21e3]
InstallationDate: Installed on 2012-04-23 (369 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: LENOVO 1141CTO
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_NZ:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_NZ.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic root=UUID=8ced2ac0-f4e6-4af1-9953-5c8014e8a09f ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to raring on 2013-04-26 (2 days ago)
dmi.bios.date: 11/03/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8HET40WW(1.22)
dmi.board.asset.tag: Not Available
dmi.board.name: 1141CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr8HET40WW(1.22):bd11/03/2011:svnLENOVO:pn1141CTO:pvrThinkPadE420:rvnLENOVO:rn1141CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 1141CTO
dmi.product.version: ThinkPad E420
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.43-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.1-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.1-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Sun Apr 28 14:00:31 2013
xserver.configfile: default
xserver.errors: RADEON(G0): [XvMC] Failed to initialize extension.
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu6
xserver.video_driver: intel

[Launchpad Janitor (janitor)]

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