Yonik: is nightly.sh running in your crontab? Can you double check which ant is geting used and make changes as appropriate?
(and update the new NightlyBuilds wiki page) : maven.ant.tasks-check: : : BUILD FAILED : /tmp/apache-solr-nightly/common-build.xml:334: ################################################################## : Maven ant tasks not found. : Please make sure the maven-ant-tasks jar is in ANT_HOME/lib, or made : available to Ant using other mechanisms like -lib or CLASSPATH. : ################################################################## : : Total time: 8 minutes 9 seconds : : -Hoss