Redmine

So I set up Redmine running on Lighttpd yesterday. It runs well but there is one huge problem. It seems to be taking up about 75% of my RAM (676MB max). Here are the relevant part of ps -aux.

USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
www-data  2252  0.0  0.4 150140  3300 ?        S    Aug10   0:03 ruby /usr/share/redmine/public/dispatch.fcgi
www-data  2640  0.0  0.4 150648  2956 ?        S    Aug10   0:03 ruby /usr/share/redmine/public/dispatch.fcgi
www-data  2777  0.0  4.6 150648 32368 ?        S    Aug10   0:03 ruby /usr/share/redmine/public/dispatch.fcgi
www-data  2856  0.0 10.5 150660 72964 ?        S    Aug10   0:03 ruby /usr/share/redmine/public/dispatch.fcgi
www-data  2922  0.0 10.5 150688 72944 ?        S    Aug10   0:03 ruby /usr/share/redmine/public/dispatch.fcgi
www-data  3125  0.0 10.5 150648 72948 ?        S    Aug10   0:03 ruby /usr/share/redmine/public/dispatch.fcgi
www-data  4566  0.0 10.5 150720 73052 ?        S    Aug10   0:03 ruby /usr/share/redmine/public/dispatch.fcgi
www-data  4631  0.0 10.5 150720 72772 ?        S    Aug10   0:03 ruby /usr/share/redmine/public/dispatch.fcgi
www-data  4725  0.0 10.5 150652 73044 ?        S    Aug10   0:03 ruby /usr/share/redmine/public/dispatch.fcgi
www-data  4782  0.0 11.4 156508 79600 ?        S    Aug10   0:04 ruby /usr/share/redmine/public/dispatch.fcgi

And free -m returns this:

             total       used       free     shared    buffers     cached
Mem:           676        668          8          0          2         30

Here is my Lighttpd config for Redmine:

$HTTP["url"] =~ "^/redmine/?" {
  alias.url = ("/redmine" => "/usr/share/redmine/public")
  server.document-root = "/usr/share/redmine/public/" 
  server.error-handler-404 = "/redmine/dispatch.fcgi" 
  index-file.names         = ("dispatch.fcgi")

  fastcgi.server           += (
    ".fcgi" => (
      "redmine" => (
         "min-procs"       => 1,
         "max-procs"       => 2,
         "check-local"    => "disable",
         "socket"          => "/tmp/redmine.socket",
         "bin-path"        => "/usr/share/redmine/public/dispatch.fcgi",
         "bin-environment" => (
          "RAILS_ENV"               => "production",
          "RAILS_RELATIVE_URL_ROOT" => "/redmine" 
         )
       )
     )
   )
}

Those processes seem to remain there forever. Anybody have a clue why this would be occuring? Thanks!