When attempting to login, and you know the system has your current email address and password, the most common cause is a bad entry in your browser’s cache. To resolve the issue, you will need to clear out temporary internet files and cookies. Depending on your browser, you will need to reference the following instructions.
IE: http://support.microsoft.com/kb/260897
Firefox: http://support.mozilla.org/en-US/kb/delete-cookies-remove-info-websites-stored
Chrome: http://support.google.com/chrome/bin/answer.py?hl=en&answer=95647
Safari: http://support.apple.com/kb/ph5049
Once you have followed the instructions and restarted your browser, you should be able to log in. If you are still unable to login, please contact your system administrator to verify that your email address is still on file and has not been changed to a different one and that your account is active. You may also want to retrieve your password to verify it is correct.