I have a 256 meg slice which has been rock solid and with no issues. I use Litespeed (http://www.litespeedtech.com/ http://www.litespeedtech.com/) for the web s

I have a 256 meg slice which has been rock solid and with no issues. I use Litespeed (http://www.litespeedtech.com/ http://www.litespeedtech.com/) for the web server. It is excellent for Ruby on Rails hosting. It dynamically manages Ruby processes - if there is no traffic it shuts down the processes, if there is traffic it ramps up the number as necessary up to the max that you specify. On my slice I have a few PHP sites, a few static sites and 4 RoR sites (most of which get very little traffic.) Overall about 30k page views a day. Litespeed isn't open source, but it is free and it works great for my hosting.