Unable to contact the Apache Solr server I followed README.txt and installed these :
apache solr 1.4.1 (Out side WWW Directory)
Apache Solr Drupal modules
SolrPHPClient r22 (placed inside module)
I copied over xml files(as mentioned in readme) to example folder
And after starting up SOLR as java -jar start.jar I am able to access localhost:8983/solr/admin, 
But still i get 

Apache Solr: Your site was unable to contact the Apache Solr server.


I am using windows :(
Since you're able to connect to ApacheSolr I am keen to know if you set the credentials correctly on Drupal side. Make sure that you added the local server correctly here admin/config/search/apachesolr/settings/add. After that use the Test connection button to verify that you are able to contact the ApacheSolr server.