In some cases, after you change your Appstate password your Mac OS X Keychain can get out of sync. With this guide you'll reset the keychain and re-sync your passwords.
WARNING: Resetting the Keychain will remove any saved passwords you had previously saved in Keychain.
Step-by-step guide
Look for Reset My Keychain under the Featured section and click the Reset button.
If you have any questions, feel free to submit a support request at http://support.appstate.edu/help, or call the Help Desk at 262-6266.