Not showing shut-down,battery status buttons in panel

[Naveen Kumar R]

I installed gnome-panel package in ubuntu 12.04.Then i logut and select Gnome-classic.For first few weeks its working perfectly.But now it not showing the shut-down and battery status buttons.Then using window key+ alt+right click i added shut-down button.But battery status button not available there.How can i add battery status in panel.I can't identify the problem which update cause this problem.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-panel 1:3.4.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic-pae 3.2.18
Uname: Linux 3.2.0-25-generic-pae i686
ApportVersion: 2.0.1-0ubuntu8
Architecture: i386
Date: Fri Jun 15 10:32:39 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
ProcEnviron:
 LANGUAGE=en_IN:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_IN
 SHELL=/bin/bash
SourcePackage: gnome-panel
UpgradeStatus: No upgrade log present (probably fresh install)