Launcher - Chrome/mium duplicated and invisible launchers problem

[manny]

Multiple Chrome/mium launchers duplicated (some invisible) appear when launching the app in ubuntu 11.10.

if the app is pinned and you close and launch again more duplicates keep appearing...

(screen attached)

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity 4.28.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17
Uname: Linux 3.0.0-16-generic i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,gnomecompat,regex,snap,resize,move,imgpng,compiztoolbox,place,vpswitch,session,mousepoll,grid,unitymtgrabhandles,animation,expo,wall,fade,scale,workarounds,ezoom,unityshell]
Date: Thu Mar 15 08:29:39 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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