title: nutch Unable to successfully parse content
body: <p>I try to crawl using nutch 1.4 , but I'm facing error in parsing, this is the log file:</p>
  
  <pre><code>2012-01-09 09:12:02,696 INFO  parse.ParseSegment - ParseSegment: starting at          2012-01-09 09:12:02 
  2012-01-09 09:12:02,697 INFO  parse.ParseSegment - ParseSegment: segment: crawl/segments/20120109091153
  2012-01-09 09:12:03,416 WARN  parse.ParseUtil - Unable to successfully parse content http://sujitpal.blogspot.com/ of type application/xhtml+xml
  2012-01-09 09:12:03,417 INFO  parse.ParseSegment - Parsing: http:// sujitpal.blogspot.com/
  2012-01-09 09:12:03,418 WARN  parse.ParseSegment - Error parsing: http://sujitpal.blogspot.com/: failed(2,200): org.apache.nutch.parse.ParseException: Unable to successfully parse content
  2012-01-09 09:12:03,419 INFO  crawl.SignatureFactory - Using Signature impl: org.apache.nutch.crawl.MD5Signature
  </code></pre>
  
  <p>by checking config/nutch-site.xml I found html|text|xhtml|xml are included in the plugin.includes preperty</p>
  
  <pre><code>&lt;property&gt;
  &lt;name&gt;plugin.includes&lt;/name&gt;
  &lt;value&gt;myplugins|protocol-httpclient|query-(basic|site|url)|summary- 
  basic|urlfilter-    
  regex|parse-(xml|xhtml|html|tika|text|js)|index-(basic|anchor)|scoring-  
  opic|urlnormalizer-(pass|regex|basic)|query-(basic|site|url)|response-(json|xml)
  &lt;/value&gt;
  &lt;description&gt;Regular expression naming plugin directory names to
  include.  Any plugin not matching this expression is excluded.
  In any case you need at least include the nutch-extensionpoints plugin. By
  default Nutch includes crawling just HTML and plain text via HTTP,
  and basic indexing and search plugins. In order to use HTTPS please enable 
  protocol-httpclient, but be aware of possible intermittent problems with the 
  underlying commons-httpclient library.
  &lt;/description&gt;
  &lt;/property&gt;
  </code></pre>
  
  <p>Why can't it parse xhtml/xml or even text/xml?</p>