<hr /><i>dmitry added on 2011-12-20 14:39:07 UTC:</i><br />
So it seems timeline.rss gives an empty document? I cannot reproduce this on a fresh repo:

$ fossil new test.fossil; fossil ui test.fossil

Go to localhost:8080/timeline.rss, got this feed:

<verbatim>
<?xml version="1.0"?>
<rss xmlns:dc="http://purl.org/dc/elements/1.1/" version="2.0">
  <channel>
    <title>Fossil source repository for: http://localhost:8080</title>
    <link>http://localhost:8080</link>
    <description>Fossil source repository for: http://localhost:8080</description>
    <pubDate>Tue, 20 Dec 2011 14:34:29 GMT</pubDate>
    <generator>Fossil version [132dbcedbc] 2011-12-16 22:00:37</generator>
    <item>
      <title>initial empty check-in</title>
      <link>http://localhost:8080/info/b549651a6a0b47850d6a7d8c5cee44a9080e6bc0</link>
      <description>initial empty check-in</description>
      <pubDate>Tue, 20 Dec 2011 14:34:19 GMT</pubDate>
      <dc:creator>dchest</dc:creator>
      <guid>http://localhost:8080/info/b549651a6a0b47850d6a7d8c5cee44a9080e6bc0</guid>
    </item>
  </channel>

</rss>
</verbatim>