Anytime you change your ubuntu login password, you should also change your keyring password. If you don’t do it, it might display the “Enter password” dialoge when you do certain things on your system (for example, connecting to wireless).
To change the keyring password, do the following.
Search for  Passwords and Keys, select “Passwords: Login” -> right-mouse click -> and select “Change Password”.
From here, you can change the new password for the login keyring.
or locate the login.keyrings file and delete it