Gabriele: Creating a wiki page really isn't the approprate way to ask for help diagnosing a problem -- that's why we have the user mailing list.
Regarding your specific problem, note that this... : $SOLR_HOME/solr.xml: : {{{ : <?xml version="1.0" encoding="utf-8"?> : <Context docBase="/home/gkahlout/SOLR_HOME/solr.war" debug="0" crossContext="true"> : <Environment name="solr/home" type="java.lang.String" value="/home/gkahlout/SOLR_HOME" override="true"/> : </Context> : }}} ...is not a valid solr.xml file ... that is a context file for tomcat, and doesn't belong in the $SOLR_HOME dir, it belongs in the $CATALINA_HOME/conf/Catalina/localhost/ (there is an unfortunate naming colision that takes place, because "solr.xml" is what a tomcat context file should be named if you want the path to be "/solr/" but tomcat context files are not hte same as the solr.xml files that are used to tell solr what cores to load) -Hoss