Attempt to slightly limit the ical events, to only have the future one...

app/controllers/events_controller.rb

@@ -15,8 +15,8 @@ class EventsController < ApplicationController
     respond_to do |format|
       format.html
       format.json { @events = @events.future }
+      format.ics { @events = @events.future }
       format.rss { @events = filter_for_rss }
-      format.ics { @events = @events.last_year }
       format.xml
     end
   end