My presentation on Vagrant is at:
Unlike most of the Vagrant base boxes that people are using for Ruby on Rails development, my Vagrant base box uses Debian Stable instead of Ubuntu. Debian Stable requires only occasional and modest updates. In contrast, Ubuntu becomes out of date very rapidly and thus requires frequent and substantial updates.
If you aren't already using Vagrant, it's time to start. I've been taking action to improve everyone's Vagrant experience, and I'm making Vagrant part of my standard operating procedure for Ruby on Rails development. My Vagrant setup will be valuable for RailsBridge, Startup Weekend, and 24-hour web site challenges. Vagrant is especially valuable on Windows computers due to the pitfalls of installing Ruby on Rails in the Windows environment.