unity panel is showing artifacts above the panel

[Doug McMahon]

They are always seen above the indicator area & when exposing the global menu of any app appears above it also
Saw on a beta1 installl after upgrade of unity-2d on 09/09, currently on live session from 09/10 daily, same thing
Attaching screen, should be visible
(nvidia hardware, using nouveau on live session, nvidia-current on beta1 install

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity-2d 4.6.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4
Uname: Linux 3.0.0-10-generic i686
ApportVersion: 1.22.1-0ubuntu2
Architecture: i386
CasperVersion: 1.283
Date: Sat Sep 10 13:56:36 2011
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110910)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity-2d
UpgradeStatus: No upgrade log present (probably fresh install)

[Doug McMahon (mc3man)]

It would appear the rffect as shown in screen is more visible if the png is dl'ed & viewed vs. in browser