not appear in top bar of unity, disappeared completely

[aleexfrost]

http://i78.servimg.com/u/f78/16/05/59/64/indica10.png
if you see the link in a picture so that you will see that the icon is not displayed in user session

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: indicator-session 0.3.96-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-48.74-generic 3.2.46
Uname: Linux 3.2.0-48-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu17.3
Architecture: amd64
Date: Fri Jun 28 01:03:42 2013
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
SourcePackage: indicator-session
UpgradeStatus: No upgrade log present (probably fresh install)