keyring locked

Hi,

Recently i changed my login password twice. There is no problem when i change my password for the first time. But after i changed my password for the second time, it prompt me "Enter password for default keyring to unlock" "'Account manager' (/usr/lib/telepathy/mission-control-5)" whenever i try to open empathy. The password is the password that i used previously. Please advise me on overcome this problem.