"0" Status: Request failed

Upon trying to search I am getting the following in watchdog:

Message "0" Status: Request failed
Severity error

SOLR is running and indexing documents correctly, the site can contact the server and the Solr PHP Client Library is correct.

Testing with drush gives the following

# drush solr search finance
PHP Fatal error:  Uncaught exception 'Exception' with message '"0" Status: Request failed' in /web/vhosts/ixisdev/sites/all/modules/apachesolr/Drupal_Apache_Solr_Service.php:272
Stack trace:
#0 /web/vhosts/ixisdev/sites/all/modules/apachesolr/SolrPhpClient/Apache/Solr/Service.php(964): Drupal_Apache_Solr_Service->_sendRawGet('http://192.168....')
#1 /web/vhosts/ixisdev/sites/all/modules/apachesolr/apachesolr_search.module(246): Apache_Solr_Service->search('finance', 0, '20', Array)
#2 /web/vhosts/ixisdev/sites/all/modules/apachesolr/drush/apachesolr.drush.inc(145): apachesolr_search_execute('finance')
#3 [internal function]: apachesolr_drush_solr_search('finance')
#4 /usr/share/drush/includes/drush.inc(51): call_user_func_array('apachesolr_drus...', Array)
#5 /usr/share/drush/drush.php(90): drush_dispatch(Array)
#6 /usr/share/drush/drush.php(40): drush_main()
#7 {main}
  thrown in /web/vhosts/ixisdev/sites/all/modules/apachesolr/Drupal_Apache_Solr_Service.php on line 272
Drush command could not be completed.                           

From the SOLR logs I get the following

_header=[1290936822,747881713,m=4,g=4096,p=4096,c=4096]={/solr/select?fl=id%2Cnid%2Ctitle%2Ccomment_cou SNIP}{}
_buffer=[1290936822,747881713,m=4,g=4096,p=4096,c=4096]={/solr/select?fl=id%2Cnid%2 SNIP {}
2010-04-25 11:47:59.784::WARN:  handle failed
java.io.IOException: FULL
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:274)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:202)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:378)
        at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:226)
        at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)

I have tried to increase headerBufferSize and tried varying versions of SOLR & jetty from nightly builds. SOLR attachments, statistics and node access are being used to have disabled all those to try and narrow it down further to no avail.