The Phusion Passenger guys really dropped a bomb at their Railsconf presentation today, which unfortunately was poorly attended. Their successful copy-on-write improvements to Ruby (released as Ruby Enterprise Edition) and their improved queueing mechanisms in the Passenger Apache module make it currently the Rails deployment option with the fastest execution times and the lowest memory footprint, even when compared with nginx and thin servers in front of mongrel clusters.
On top of this, they announced that the mod_rails moniker has been abandoned, since it now supports Rack (which allows you to host things like Camping and Merb apps) and WSGI, which even lets it run things like Django (!)
I personally am really excited that Dreamhost has installed Passenger, which makes it so much easier for me to host my personal Rails apps.

Hey, have you tried to get Merb working on dreamhost yet? I don’t even know if they have upgraded to 2.0.
Please let me know. I would love to get Merb + Passenger + Dreamhost running.
Quick Tip Carl: “queueing” is spelled with one E.
Hey Taelor, sorry for my delayed response. I haven’t yet got Merb working on Dreamhost, but I don’t think it should be hard. I’ve already successfully run Rack and Rails apps on it. Email me if you’re still having trouble.