<p>I’m trying to make the routing module works with default action or controller, but it doesn’t. I always face with 404 page not found. Did I forget to do something? I really like routing in ASP.NET MVC feature, but I’m not sure I could do the same in MR. I’m using IIS7 with the build from castle trunk for .NET 3.5.</p>

How are you configuring the routing? I had issues myself when trying to manage the routing-rules from web.config, but moving it to inline-code on application-start worked for me.
I tried to find an answer to why the xml-way didn't work, but never found one. They made a major rewrite of the routing-engine since RC3, that might have broken it.
Example from Application_OnStart()
```
var rule = new PatternRoute( "default", "/" )
    .DefaultForController().Is()
    .DefaultForAction().Is( "index" );

RoutingModuleEx.Engine.Add( rule );
```
Remember to load the RoutingEngineModule before the MonoRailHandler in web.config.