CalendarAgent wants to use the "login" keychain

A student came to see me today with issues after having upgraded to Mavericks.  Ever since she updated to Mavericks she has been getting pop ups that are asking for keychain access passwords for all different access. Every time she enters a password it is rejected.  Hitting cancel makes the prompt come up immediately again.

CalendarAgent wants to use the "login" keychain

Messages Agent wants to use the "login" keychain

I was able to fix the problem by following the instructions below:

1. Open Keychain Access, which is in the Utilities folder within the Applications folder.
2. From the Keychain Access menu, choose Preferences.
3. Click General, then click Reset My Default Keychain.
4. Authenticate with your account login password.
5. Quit Keychain Access.
6. Restart your computer.