I'm getting the same with fresh knot2 in a VM. The problem is caused by KDE's session restore starting up the old instance or instances, along with a startup or login script starting another instance.
The workaround is to add "guidance-power-manager" without quotation marks to Session Manager's list of excluded applications. The fix should probably be a little piece of conditional logic in the script that starts guidance-power-manager. -- More than one guidance power manager in the system tray https://launchpad.net/bugs/58522 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs