Note board webpart is not working properly in pages

In Wiki Pages Note board webpart is not working, one reason may lack of permission. Following are the steps:

1)      Go to Central Administration->Application Management -> Under Service Application->Manage Service Applications

2)      Click on User Service Application.

3)      Click on Manage User Permissions under People

4)      Add “All Authenticated Users and NT Authority\Authenticated Users” and Check all the Check Boxes.

Basically, we need to give permissions to all users who want to use NoteBoard Webpart on the site.