Description of problem:
In gnome3 on f15 pre-releases, an icon called main.py appears in the message tray, but according to http://live.gnome.org/GnomeShell/Design/Guidelines/MessageTray/Compatibility, the notification area is deprecated in GNOME 3 and shouldn't be used. Instead, it should integrate with input language status indicator in the System Status Area (http://live.gnome.org/GnomeShell/Design/Guidelines/SystemStatus) or at least default to not showing it.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. boot a desktop f15 pre-release image
2. log in
status icon in message tray
*** This bug has been marked as a duplicate of bug 657165 ***
I have been working the issue on upstream.
BTW, I have integrated the development version in ibus f15 and you need to modify some files by root user below.