diff --git a/slf4j-api/src/main/java/org/slf4j/helpers/Util.java b/slf4j-api/src/main/java/org/slf4j/helpers/Util.java
index 01a4fb45..fb45ec26 100755
--- a/slf4j-api/src/main/java/org/slf4j/helpers/Util.java
+++ b/slf4j-api/src/main/java/org/slf4j/helpers/Util.java
@@ -67,8 +67,21 @@ public final class Util {
         }
     }
 
-    private static final ClassContextSecurityManager SECURITY_MANAGER = safeCreateSecurityManager();
-
+    private static ClassContextSecurityManager SECURITY_MANAGER;
+    private static boolean SECURITY_MANAGER_CREATION_ALREADY_ATTEMPTED = false;
+    
+    private static ClassContextSecurityManager getSecurityManager() {
+        if(SECURITY_MANAGER != null)
+            return SECURITY_MANAGER;
+        else if(SECURITY_MANAGER_CREATION_ALREADY_ATTEMPTED)
+            return null;
+        else {
+            SECURITY_MANAGER = safeCreateSecurityManager(); 
+            SECURITY_MANAGER_CREATION_ALREADY_ATTEMPTED = true;
+            return SECURITY_MANAGER;
+        }
+    }
+    
     private static ClassContextSecurityManager safeCreateSecurityManager() {
         try {
             return new ClassContextSecurityManager();
@@ -83,9 +96,10 @@ public final class Util {
      * @return the name of the class which called the invoking method.
      */
     public static Class<?> getCallingClass() {
-        if(SECURITY_MANAGER == null)
+        ClassContextSecurityManager securityManager = getSecurityManager();
+        if(securityManager == null)
             return null;
-        Class<?>[] trace = SECURITY_MANAGER.getClassContext();
+        Class<?>[] trace = securityManager.getClassContext();
         String thisClassName = Util.class.getName();
 
         // Advance until Util is found
diff --git a/slf4j-simple/src/test/java/org/slf4j/DetectLoggerNameMismatchTest.java b/slf4j-simple/src/test/java/org/slf4j/DetectLoggerNameMismatchTest.java
index c6c6f205..fd1b83d1 100755
--- a/slf4j-simple/src/test/java/org/slf4j/DetectLoggerNameMismatchTest.java
+++ b/slf4j-simple/src/test/java/org/slf4j/DetectLoggerNameMismatchTest.java
@@ -80,6 +80,7 @@ public class DetectLoggerNameMismatchTest {
     public void testTriggerWithProperty() {
         setTrialEnabled(true);
         LoggerFactory.getLogger(String.class);
+        String s = String.valueOf(byteArrayOutputStream);
         assertMismatchDetected(true);
     }
 
@@ -90,8 +91,9 @@ public class DetectLoggerNameMismatchTest {
     public void testTriggerWholeMessage() {
         setTrialEnabled(true);
         LoggerFactory.getLogger(String.class);
-        assertTrue("Actual value of byteArrayOutputStream: " + String.valueOf(byteArrayOutputStream), String.valueOf(byteArrayOutputStream).contains(
-                        "Detected logger name mismatch. Given name: \"java.lang.String\"; " + "computed name: \"org.slf4j.DetectLoggerNameMismatchTest\"."));
+        boolean success = String.valueOf(byteArrayOutputStream).contains(
+                        "Detected logger name mismatch. Given name: \"java.lang.String\"; " + "computed name: \"org.slf4j.DetectLoggerNameMismatchTest\".");
+        assertTrue("Actual value of byteArrayOutputStream: " + String.valueOf(byteArrayOutputStream), success);
     }
 
     /*
diff --git a/slf4j-site/src/site/pages/news.html b/slf4j-site/src/site/pages/news.html
index 88d12eb4..d7c496c4 100755
--- a/slf4j-site/src/site/pages/news.html
+++ b/slf4j-site/src/site/pages/news.html
@@ -29,7 +29,15 @@
 
    <hr noshade="noshade" size="1"/>
 
-   <h3>, 2015 - Release of SLF4J 1.7.13</h3>
+   <h3>10th of November, 2015 - Release of SLF4J 1.7.13</h3>
+
+
+   <p>Fixed <code>LoggerFactory</code> initialisation problem in
+   presence of SecurityManager denying "createSecurityManage"r
+   RuntimePermission. See <a
+   href="http://jira.qos.ch/browse/SLF4J-324">SLF4J-324</a> for
+   further details.
+   </p>
 
    <p>Fixed issue with <code>BasicMDCAdapter</code> leaking MDC
    information to non-child threads. This problem was reported by