diff -Nur -x '*.orig' -x '*.rej' trac-0.10.3.1/htdocs/js/trac.js mezzanine_patched_trac-0.10.3.1/htdocs/js/trac.js
--- trac-0.10.3.1/htdocs/js/trac.js	2007-03-09 04:23:17.000000000 +1030
+++ mezzanine_patched_trac-0.10.3.1/htdocs/js/trac.js	2007-04-03 08:16:22.000000000 +0930
@@ -129,3 +129,46 @@
     addLinks(container.getElementsByTagName('h' + lvl));
   }
 }
+
+
+function clearAuthenticationCache(page) {
+  // Default to a non-existing page (give error 500).
+  // An empty page is better, here.
+  if (!page) page = '.force_logout';
+  try{
+    var agt=navigator.userAgent.toLowerCase();
+    if (agt.indexOf("msie") != -1) {
+      // IE clear HTTP Authentication
+      document.execCommand("ClearAuthenticationCache");
+    }
+    else {
+      // Let's create an xmlhttp object
+      var xmlhttp = createXMLObject();
+      // Let's prepare invalid credentials
+      xmlhttp.open("GET", page, true, "logout", "logout");
+      // Let's send the request to the server
+      xmlhttp.send("");
+      // Let's abort the request
+      xmlhttp.abort();
+    }
+  } catch(e) {
+    // There was an error
+    return;
+  }
+}
+
+function createXMLObject() {
+  try {
+    if (window.XMLHttpRequest) {
+      xmlhttp = new XMLHttpRequest();
+    }
+    // code for IE
+    else if (window.ActiveXObject) {
+      xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
+    }
+  } catch (e) {
+    xmlhttp=false
+  }
+  return xmlhttp;
+}
+
diff -Nur -x '*.orig' -x '*.rej' trac-0.10.3.1/trac/web/auth.py mezzanine_patched_trac-0.10.3.1/trac/web/auth.py
--- trac-0.10.3.1/trac/web/auth.py	2007-03-09 04:23:18.000000000 +1030
+++ mezzanine_patched_trac-0.10.3.1/trac/web/auth.py	2007-04-03 08:25:22.000000000 +0930
@@ -85,7 +85,8 @@
         if req.authname and req.authname != 'anonymous':
             yield ('metanav', 'login', 'logged in as %s' % req.authname)
             yield ('metanav', 'logout',
-                   html.A('Logout', href=req.href.logout()))
+                   html.A('Logout', href=req.href.logout(),
+                           onclick="clearAuthenticationCache(\'%s\')" % req.href.logout()))
         else:
             yield ('metanav', 'login',
                    html.A('Login', href=req.href.login()))