Problem solved, I hope -- apparently IPv6 causes trouble for the Java VM -- this is a bug in Java, but a workaround is to put -Djava.net.preferIPv4Stack=true on the Java command line. It seems to have made the UnknownHostException go away, so I am happy!
Others have bumped into this bug; see: http://stackoverflow.com/questions/1608503/domain-name-resolution-not-working-in-java-applications-on-ubuntu64-9-04-machine and also: http://www-01.ibm.com/support/docview.wss?uid=nas8N1011363 Hope this helps, Robert Dodier ------------------------------------------------------ http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=3065253
