Meetup on Tuesday, Nov. 2 in Atlanta coinciding with ApacheCon. Details at ApacheCon2010Meetup.
http://www.lucidimagination.com/blog/2010/10/08/open-source-enterprise-search-european-tour-rome/ Oct 28 in Rome.
http://www.lucidimagination.com/blog/2010/10/08/open-source-enterprise-search-european-tour-amsterdam/ Oct 26 in Amsterdam.
http://www.lucidimagination.com/blog/2010/10/08/open-source-enterprise-search-european-tour-london/ Oct 25 in London.
http://www.eu.apachecon.com March 23-27 in Amsterdam.
http://www.heise.de/events/2008/open_source_meets_business/ January 23, 2008
http://berlin.web2expo.com/ November 8, 2007
http://www.ossummit.com/index.html
http://trijug.org November 19, 2007
Lucene/Solr OpenSourceRetreat: a week long deep interactive dive into Lucene and Solr.
Lucene Java and related Lucene projects will have extensive representation at ApacheCon Europe in Amsterdam this year. See the Lucene homepage for details.
April 9, 2005 - "Java Gems: Ant, Tapestry, and Lucene" Professional Development Seminar. http://www.gbcacm.org/website/semInfo.php?id=1093