Duplicate nonfunctional icons appear in Notification Area

Binary package hint: gnome-panel

Running Karmic, with icons appearing in a Notification Area (version 2.28.0) in the top panel, often one or another icon will be duplicate. For example, right now the notification area shows the volume control and TWO battery indicators. Only one of the battery indicator icons is functional. I have seen this happen with the volume control and other indicators as well.

This is on a Dell 10v netbook, with
Ubuntu version and kernel version
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=9.10
DISTRIB_CODENAME=karmic
DISTRIB_DESCRIPTION="Ubuntu 9.10"
Linux mini 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 05:23:09 UTC 2010 i686 GNU/Linux
model name : Intel(R) Atom(TM) CPU N270 @ 1.60GHz
model name : Intel(R) Atom(TM) CPU N270 @ 1.60GHz
cpu MHz : 800.000
cpu MHz : 1600.000

I am enclosing a screenshot of the upper-right corner of the screen.

ProblemType: Bug
Architecture: i386
Date: Mon Apr 5 13:22:48 2010
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
NonfreeKernelModules: wl
Package: gnome-panel 1:2.28.0-0ubuntu6
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-20.58-generic
SourcePackage: gnome-panel
Uname: Linux 2.6.31-20-generic i686