I chronicled exactly what I had to configure to slay this dragon at http://vinaybalamuru.wordpress.com/2012/04/12/solr4-tomcat-multicor/
Hope that helps -- View this message in context: http://lucene.472066.n3.nabble.com/need-some-help-with-a-multicore-config-of-solr3-6-0-tomcat7-mine-reports-Severe-errors-in-solr-confi-tp3957196p3957389.html Sent from the Solr - User mailing list archive at Nabble.com.