A while back I did a lot of analysis using data from the Service Factory: Modeling Edition source code control and continuous integration (CI) servers. I analyzed the causes, impact and frequency of build breaks and the cost of using a lightweight check-in process over a more lengthy “complex check-ins that never break the build” approach.
You can read more about the experience report in the proposal “A Hundred Days of Continuous Integration“. I’m really looking for feedback on it so I’d encourage you to review it on the Agile 2008 site (or here if you don’t fancy creating an account on the conference site).
Either way I’m looking forward to Agile 2008 in Toronto!