Index: lams_gradebook/build.xml
===================================================================
RCS file: /usr/local/cvsroot/lams_gradebook/build.xml,v
diff -u -r1.5 -r1.6
--- lams_gradebook/build.xml	27 Mar 2012 14:44:37 -0000	1.5
+++ lams_gradebook/build.xml	27 Mar 2012 14:57:20 -0000	1.6
@@ -53,9 +53,13 @@
 		<mkdir dir="${build.lib}" />
 	</target>
 
-	<target name="clean" description="removes all class files">
-		<delete dir="${build}" quiet="false"/>
-		<mkdir dir="${build}"/>
+	<target name="clean" depends="preparedirs" description="removes all class files">
+		<delete>
+			<fileset dir="${build.classes.java}" />
+			<fileset dir="${build.classes.test}" />
+			<fileset dir="${build.lib}" />
+			<fileset dir="${build.war}" />
+		</delete>
 	</target>
 
 	<target name="compile.java" depends="clean" description="compile java sources">