Userdisp aspx not updating what is a relative dating method
You'll find here a summary list of most common questions, known issues and/or other reported cases since RTM.
For your convenience, I listed the links below to give you a short "jump" to it.
If the User Profile service application is not enabled, when user visits the site initially, it pulls the user data from Active directory and it stores his/her information in the content database "User Information List".
These fields can be added or removed to suit the needs of an organization.
User profiles and user profile properties provide information about Share Point users. Every user has his or her personal settings for a site collection.You can view these details by clicking the logged-in user link and then selecting My Settings.Then the next time, the content database is searched for your information, and if found, it is then displayed.This information can be updated by using the Share Point object model as shown in the following steps. Create an entity for User Settings that has all of the properties that can be easily extended.