Aside from the website being temporarily down, the biggest login issue involves your browser, JavaScript, and namespace.  In other words, before you log onto myMU, make sure the URL in your browser's address bar begins with http://mutinyuniverse.com/mu/ without the www subdomain and including the final backslash.  If you log onto the site from http://www.mutinyuniverse.com/mu/ you may receive a strange error message or not have your myMU menu options displayed, depending on your browser.

Another way to remedy this problem is to click on the Home link, or any other Site Navigation link.  The myMU menu options should appear correctly.