--- jasper/src/share/org/apache/jasper/security/SecurityClassLoad.java	(revision 919732)
+++ jasper/src/share/org/apache/jasper/security/SecurityClassLoad.java	(working copy)
@@ -99,6 +99,9 @@ 
             loader.loadClass( basePackage +
                 "runtime.JspContextWrapper");   
 
+            // Trigger loading of class and reading of property (BZ48580)
+            SecurityUtil.isPackageProtectionEnabled();
+
             loader.loadClass( basePackage +
                 "servlet.JspServletWrapper");