Redmine

hello ,

I am newbie in linux and I have intalled redmine on port 80 via apache .
but i get an internal error when i click to projects. i need some help

1. My environment.rb files looks like this

1. Load the rails application
   require File.expand_path('../application', FILE)

1. Make sure there's no plugin in vendor/plugin before starting
   vendor_plugins_dir = File.join(Rails.root, "vendor", "plugins")
   if Dir.glob(File.join(vendor_plugins_dir, "*")).any?
   $stderr.puts "Plugins in vendor/plugins (#{vendor_plugins_dir}) are no longer allowed. " +
   "Please, put your Redmine plugins in the `plugins` directory at the root of your " +
   "Redmine directory (#{File.join(Rails.root, "plugins")})"
   exit 1
   end

1. Initialize the rails application
   RedmineApp::Application.initialize!

2. I have renamed the dispatch.fcgi.example to dispatch.fcgi and did same to htaccess.

2324273 rw-rw-r- 1 www-data www-data 485 May 15 2012 404.html
12324420 rw-rw-r- 1 www-data www-data 674 May 15 2012 500.html
12325543 rwxr-xr-x 1 www-data www-data 473 Dec 10 10:04 dispatch.fcgi
12324288 -rwxrwxr-x 1 www-data www-data 473 May 15 2012 dispatch.fcgi.example
12324289 -rw-rw-r- 1 www-data www-data 7886 May 15 2012 favicon.ico
12324274 drwxrwxr-x 2 www-data www-data 4096 May 15 2012 help
12325544 rw-r--r- 1 www-data www-data 1441 Dec 10 13:29 .htaccess
12324290 rw-rw-r- 1 www-data www-data 1441 May 15 2012 htaccess.fcgi.example
12324291 drwxrwxr-x 4 www-data www-data 4096 May 15 2012 images
12324430 drwxrwxr-x 4 www-data www-data 4096 May 15 2012 javascripts
14684230 drwxr-xr-x 2 www-data www-data 4096 Dec 6 12:05 plugin_assets
12324421 drwxrwxr-x 2 www-data www-data 4096 May 15 2012 stylesheets
12324277 drwxrwxr-x 4 www-data www-data 4096 May 15 2012 themes

3 . i have apache errors like this

[Mon Dec 10 14:00:55 2012] [error] Premature end of script headers:
need help guys