Mac OS X 10.6: Solving problems with keychains
If you have some experience administering computers, you may be able to identify and resolve some keychain problems by using Keychain First Aid. Keychain First Aid will verify and repair keychain settings and permissions.
Other problems can be solved in Keychain Access such as:
Reset a keychain (delete a keychain reference while preserving the keychain file)
Make the login keychain password the same as the login password
Set the login keychain as the default keychain
Set the login keychain to always remain unlocked
To check keychains for problems using Keychain First Aid:
Open Keychain Access, located in the Utilites folder in the Applications folder.
Choose Keychain Access > Keychain First Aid.
Enter your user name and password.
Select Verify and click Start. Any problems found will be displayed.
If there are problems, select Repair, and then click Start.
To change the Keychain First Aid settings, choose Keychain Access > Preferences, and then click First Aid.