I found that I had to make some changes to the pom.xml file of the drools examples project to get it to build. Here's the patch:
--- pom.xml 2008-06-26 11:24:57.000000000 -0600 +++ pom.xml 2008-06-26 11:26:42.000000000 -0600 @@ -5,21 +5,23 @@ <parent> <artifactId>drools</artifactId> <groupId>org.drools</groupId> - <version>4.0.7.SNAPSHOT</version> + <version>4.0.7</version> </parent> <!-- TODO make this packing pom and make 2 submodules: example-waltz and example-manners (and possibly example-common too) --> + <groupId>org.drools</groupId> <artifactId>drools-examples</artifactId> <packaging>jar</packaging> <name>Drools :: examples</name> <repositories> <repository> - <id>basedir</id> - <url>file://${basedir}/../m2_repo</url> + <id>drools</id> + <name>JBoss Drools Repository for Maven</name> + <url>http://repository.jboss.com/maven2</url> </repository> </repositories>