diff -r ed7f90128426 -r b8d5e0378bcb tools/checkstyle.xml
--- a/tools/checkstyle.xml	Thu Feb 18 19:43:54 2010 +0100
+++ b/tools/checkstyle.xml	Thu Feb 18 20:02:01 2010 +0100
@@ -171,18 +171,34 @@
 	<!-- Checks for whitespace                               -->
 	<!-- See http://checkstyle.sf.net/config_whitespace.html -->
 	<module name="EmptyForIteratorPad"/>
-	<module name="GenericWhitespace"/>
-	<module name="MethodParamPad"/>
-	<module name="NoWhitespaceAfter"/>
-	<module name="NoWhitespaceBefore"/>
+	<module name="GenericWhitespace">
+	    <property name="severity" value="error"/>
+	</module>
+	<module name="MethodParamPad">
+	    <property name="severity" value="error"/>
+	</module>
+	<module name="NoWhitespaceAfter">
+	    <property name="severity" value="error"/>
+	</module>
+	<module name="NoWhitespaceBefore">
+	    <property name="severity" value="error"/>
+	</module>
 	<module name="OperatorWrap"/>
-	<module name="ParenPad"/>
-	<module name="TypecastParenPad"/>
+	<module name="ParenPad">
+	    <property name="severity" value="error"/>
+	</module>
+	<module name="TypecastParenPad">
+	    <property name="severity" value="error"/>
+	</module>
 	<!-- We want mixed tabulation
 	  <module name="TabCharacter"/> 
 	  -->
-	<module name="WhitespaceAfter"/>
-	<module name="WhitespaceAround"/>
+	<module name="WhitespaceAfter">
+	    <property name="severity" value="error"/>
+	</module>
+	<module name="WhitespaceAround">
+	    <property name="severity" value="error"/>
+	</module>
 
 
 	<!-- Modifier Checks                                    -->