After extensively testing the CB login module, I've concluded that it's definitely not as reliable as the default login module.

Several times I had logged in using the CB module, and it would refresh the page - but direct me to http://www.domain.com//... ...that extra slash it puts at the end results in an error page for myself or any of my registered users.

Not cool.

While I do like being able to have registered users see their avatar replace the log in fields, it's not worth the unreliability of the module.