Rails - Aug 2007 - Feedburner updating the feed even when it should not

I am using feedburner to publish  my feed.

I have a table called ''Event'' which has created_on and
updated_on columns
besides other attributes. Some of the attributes are disclosed through RSS.

Once the event is created, RSS feed can pick up those events.

However after a while I update a column which is not disclosed on the feed.
In the process the column updated_on also gets update. Once again I update a
column that is not disclosed on the rss feed and is not used to determine
which events to be shown.


Feedburner somehows picks up the information that I have updated the feed
and re delivers it even though I don''t want it to redeliver since the
content has not changed.

Any one has encountered this kind of issue before.

Given  below is xml feed file that I use.

xml.instruct! :xnl, :version => "1.0", :encoding =>
''UTF-8''
xml.rss "version" => "2.0", "xmlns:dc" =>
"http://purl.org/dc/elements/1.1/"
do
  xml.channel do
    xml.title "#{@city.name} Events - EventsInIndia.com"
    xml.link url_for( :only_path => false,:controller =>
''ievents'',:action
=> ''list'', :type => ''up'', :cid =>
@city.id)
    xml.description "List of events in #{@city.name}"
    xml.pubDate CGI.rfc1123_date(@events.first.created_on) if @events.any?

    xml.image do
      xml.url "http://www.eventsinindia.com/images/eii_logo3.png"
      xml.link "http://eventsinindia.com/"
      xml.title "EventsInIndia.com"
    end

    xml.language "en-us"
    xml.copyright "Copyright 2006-2007 www.EventsInIndia.com"
    xml.docs "http://blogs.law.harvard.edu/tech/rss"


    @events.each do |event|
      xml.item do
        xml.title event.name
        xml.link eventid_url(event.id)
        xml.description event_desc_for_feed(event)

        xml.comments eventid_url(event.id)

        xml.pubDate CGI.rfc1123_date(event.created_on)
        xml.author "nospam-GMWn+aNOponQT0dZR+AlfA@public.gmane.org
(#{event.user.name})"
        xml.guid eventid_url(event.id)
      end

    end
  end
end

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