[tracktor1]

>is .htaccess enabled?

Yes, is enabled.

>Do you have "RewriteEngine on" in the .htaccess?

Yes.

In this moment the .htaccess appear to work (I think this was a browser cache problem) but the main problem continues

The problem now is the same comented in the last reply but I see a strange behavior:

When the rules are added in the .htaccess, redmine stop working, all petitions redirect to "dispatch.lsapi" but instead run, it displays the contents of this file (permissions 755 in this file):

#!/usr/bin/ruby

if GC.respond_to?(:copy_on_write_friendly=)
    GC.copy_on_write_friendly = true
end

require File.dirname(__FILE__) + "/../config/environment" unless defined?(RAILS_ROOT)

# If you're using RubyGems and mod_ruby, this require should be changed to an absolute path one, like:
# "/usr/local/lib/ruby/gems/1.8/gems/rails-0.8.0/lib/dispatcher" -- otherwise performance is severely impaired
require "dispatcher"
require "lsapi"

while LSAPI.accept != nil
        Dispatcher.dispatch
end

When I remove the .htaccess, Redmine work fine without using rules or dispatch.lsapi (strange?) but the first problem appear again, access to index dont work, appear the directory listing.