This was my first RoR app and installation, and since putting it up I have forgotten most of what little I knew.

Last night my web hoster upgraded my Rails from 2.0.2 ro 2.2.2. Did you know that this usually breaks a Rails application? Well it does. Dreamhost says it notified everyone of the forthcoming upgrade, but I never heard anything, and neither did many other dissatisfied customers. 

Fortunately the fix was easy. 1) Change the version in the environment.rb, and 2) update the thing-- rake rails:update ... this last bit comes courtesy of Dave Hulihan himself. Thank you, Dave.