I'm currently evaluating Redmine as a project manager and, to keep my virtual server 'clean', I have chosen the 'rails+apache+mod_fcgi without mongrel' solution.
But the application is very unstable: it returns errors (apache logs says something like 'premature end of script: dispatch.fcgi') frecuently and only returning to the base url (http://test.domain.tld) I can return to the application.

So my question is: do you know if it's normal (i don't think so) and do you think installing it using Mongrel (like it's indicated in the vast majority of tutorials) is the solution of this problem.

I ask this because howtos about rails app installation without mongrel are hard to find, and nearly all talks about Mongrel (a Ruby webserver) in combination with apache mod_proxy.