Index: org/apache/catalina/loader/WebappClassLoader.java
===================================================================
--- org/apache/catalina/loader/WebappClassLoader.java	(revision 831783)
+++ org/apache/catalina/loader/WebappClassLoader.java	(working copy)
@@ -890,6 +890,7 @@
                     throw cnfe;
                 }
             } catch(AccessControlException ace) {
+                log.error("findClassInternal(" + name + ") failed", ace);
                 throw new ClassNotFoundException(name, ace);
             } catch (RuntimeException e) {
                 if (log.isTraceEnabled())