diff -up ./build.xml.tests-headless ./build.xml
--- ./build.xml.tests-headless 2009-11-09 10:35:40.000000000 +0100
+++ ./build.xml 2009-11-09 10:36:06.000000000 +0100
@@ -466,6 +466,7 @@
<jvmarg value="-Djna.protected=true"/>
<jvmarg value="-Djna.builddir=${build}"/>
<jvmarg value="${vmopt.arch}"/>
+ <jvmarg value="-Djava.awt.headless=true"/>
<classpath><path refid="test.runpath"/></classpath>
<formatter type="xml"/>
<batchtest todir="${results.junit}">