A modification has been made to Commonspot which forces all logins to now be performed over a secure connection, or SSL. This change only effects authoring on the Commonspot cms.scu.edu server, and doesn't have any impact on your content, either on cms.scu.edu or www.scu.edu.
Some background: When your browser connects to a web page, there are two different ways it can do this: either with a secure, encrypted connection or a less secure simple "plain text" connection. On Santa Clara's web environment most pages can be accessed either way.
Both 'http://cms.scu.edu' and 'https://cms.scu.edu' are the same, and URLs that begin with https are the secure ones.
On Monday, July 28th, any login page, such as http://cms.scu.edu/webpublishing/login.cfm on a non-secure connection, will automatically be redirected to it's secure counterpart, in this case https://cms.scu.edu/webpublishing/login.cfm. As such, you will now do all of your authoring over the https connection. If you've bookmarked a page on the non-secure connection, it won't know that you're logged in to the secure version, so you may get confusing results or think your page has moved.
The solution: update all of your cms.scu.edu bookmarks to access the same path on https://cms.scu.edu/. Also remember, this change has no effect on the www.scu.edu production servers where you are sending your end-users.