Problem on QNX Launcg Menu, Need help!

Now I get a problem on QNX(6.2.1) system.
Normally there are the following items in the QNX launch menu:
- Internet
- Utilities
- Documentation
- Editor
- Game
- Multimedia
- Development
- ------
- Software
- Configure
- Help
- Shutdown
When I login in QNX machine as a common user, some items in the launch menu from “Internet” to “Development”, have been lost. Once I log in as root, it is fine.

I have checked the luanch_menu.xml and Luanch_menu.log under the dir .ph, and could not find any problem.