Non't Spend Your Time To Reorganize Your Launchpad in Mac

After using Mac (Macbook Pro 13" running in Lion) for a while, you may see couple issues in Launchpad but don't panic!
1. Disappear icons
2. Disappear items (like a blank Launchpad)

All you need to do to reset all theses is to reboot BUT... Here comes the BUT!!!!

All icons and items in Launchpad will be reorganized into default orders. So STOP organizing your apps and items in Launchpad because they will be reordered some day!

Orz...