Mozilla recently announced that they are switching from CakePHP to Django. They are currently using CakePHP 1.1 and most of the reasons for the switch they list have been fixed in recent versions of CakePHP (1.2 & 1.3) such as debugging, unit testing and caching. I don't understand why they just didn't upgrade or at least take a look at the recent versions of CakePHP before switching and at least acknowledge the fact that most of the problems they had, had already been solved.

It's sad to see the largest CakePHP property switch to another framework, but being the large company that they are I'm sure there was a lot of thought that went into the decision. Good luck in the transition.

Source: http://micropipes.com/blog/2009/11/17/amo-development-changes-in-2010/