If you are using SimpleFSDirectory (either explicitly or via FSDirectory.open on Windows) with Solr/Lucene trunk or 3.x branch since July 30, you might have index corruption and you should svn up and rebuild.
More details available here: https://issues.apache.org/jira/browse/LUCENE-2637 <https://issues.apache.org/jira/browse/LUCENE-2637> -- Robert Muir rcm...@gmail.com
