diff --git a/includes/common.inc b/includes/common.inc
index a05a09a..6a3ba61 100644
--- a/includes/common.inc
+++ b/includes/common.inc
@@ -7131,8 +7131,11 @@ function drupal_implode_tags($tags) {
 /**
  * Flush all cached data on the site.
  *
- * Empties cache tables, rebuilds the menu cache and theme registries, and
- * invokes a hook so that other modules' cache data can be cleared as well.
+ * Clears static caches, empties cache tables, rebuilds the menu cache and theme
+ * registries, and invokes a hook so that other modules' cache data can be
+ * cleared as well.
+ * Note that after clearing all static caches also the theme is not initialized
+ * any more and any possible previously added Javascript or CSS is gone.
  */
 function drupal_flush_all_caches() {
   // Change query-strings on css/js files to enforce reload for all users.
@@ -7145,28 +7148,38 @@ function drupal_flush_all_caches() {
   // Rebuild the theme data. Note that the module data is rebuilt above, as
   // part of registry_rebuild().
   system_rebuild_theme_data();
-  drupal_theme_rebuild();
 
-  node_types_rebuild();
-  // node_menu() defines menu items based on node types so it needs to come
-  // after node types are rebuilt.
-  menu_rebuild();
+  // Now clear all static caches as well as all cache bins.
+  drupal_static_reset();
 
-  // Synchronize to catch any actions that were added or removed.
-  actions_synchronize();
+  // First clear all cache bins of core, then invoke hook_flush_caches() to get
+  // contrib cache bins to clear. That way we ensure core caches are cleared
+  // before an contrib might trigger any cache rebuild in an implementation of
+  // hook_flush_caches().
 
   // Don't clear cache_form - in-progress form submissions may break.
   // Ordered so clearing the page cache will always be the last action.
-  $core = array('cache', 'path', 'filter', 'bootstrap', 'page');
-  $cache_bins = array_merge(module_invoke_all('flush_caches'), $core);
-  foreach ($cache_bins as $bin) {
+  foreach (array('bootstrap', 'cache', 'path', 'filter', 'page') as $bin) {
+    cache($bin)->flush();
+  }
+  foreach (module_invoke_all('flush_caches') as $bin) {
     cache($bin)->flush();
   }
 
+  // Menu rebuilding is going to trigger lots of cache rebuilds.
+  menu_rebuild();
+
+  // Synchronize to catch any actions that were added or removed.
+  actions_synchronize();
+
   // Rebuild the bootstrap module list. We do this here so that developers
   // can get new hook_boot() implementations registered without having to
   // write a hook_update_N() function.
   _system_update_bootstrap_status();
+
+  // Unset the global theme variable so drupal_theme_initialize() and
+  // drupal_maintenance_theme() re-initialize the theme if necessary.
+  unset($GLOBALS['theme']);
 }
 
 /**
diff --git a/includes/install.core.inc b/includes/install.core.inc
index 4bf4bc7..865181d 100644
--- a/includes/install.core.inc
+++ b/includes/install.core.inc
@@ -1524,6 +1524,8 @@ function install_finished(&$install_state) {
   // do not leave stale cached data, and that any content types or other items
   // registered by the install profile are registered correctly.
   drupal_flush_all_caches();
+  // After flushing caches we have to re-initialize the maintenance theme again.
+  drupal_maintenance_theme();
 
   // Remember the profile which was used.
   variable_set('install_profile', drupal_get_profile());
diff --git a/includes/theme.inc b/includes/theme.inc
index e50df06..3e5d539 100644
--- a/includes/theme.inc
+++ b/includes/theme.inc
@@ -884,7 +884,12 @@ function list_themes($refresh = FALSE) {
  *   An HTML string representing the themed output.
  */
 function theme($hook, $variables = array()) {
-  static $hooks = NULL;
+  // Use the advanced drupal_static() pattern, since this is called very often.
+  static $drupal_static_fast;
+  if (!isset($drupal_static_fast)) {
+    $drupal_static_fast['hooks'] = &drupal_static(__FUNCTION__);
+  }
+  $hooks = &$drupal_static_fast['$hooks'];
 
   // If called before all modules are loaded, we do not necessarily have a full
   // theme registry to work with, and therefore cannot process the theme
diff --git a/modules/node/node.module b/modules/node/node.module
index 0c3cfb7..4b642c8 100644
--- a/modules/node/node.module
+++ b/modules/node/node.module
@@ -736,7 +736,9 @@ function _node_types_build($rebuild = FALSE) {
   }
 
   asort($_node_types->names);
-
+  // Set caches.
+  $static = &drupal_static(__FUNCTION__);
+  $static = $_node_types;
   cache()->set($cid, $_node_types);
 
   return $_node_types;
@@ -1952,10 +1954,6 @@ function node_menu() {
     'access arguments' => array('access content'),
     'type' => MENU_CALLBACK,
   );
-  // @todo Remove this loop when we have a 'description callback' property.
-  // Reset internal static cache of _node_types_build(), forces to rebuild the
-  // node type information.
-  node_type_cache_reset();
   foreach (node_type_get_types() as $type) {
     $type_url_str = str_replace('_', '-', $type->type);
     $items['node/add/' . $type_url_str] = array(
@@ -3893,6 +3891,14 @@ function node_modules_enabled($modules) {
   if (!node_access_needs_rebuild() && array_intersect($modules, module_implements('node_grants'))) {
     node_access_needs_rebuild(TRUE);
   }
+  node_types_rebuild();
+}
+
+/**
+ * Implements hook_modules_disabled().
+ */
+function node_modules_disabled($modules) {
+  node_types_rebuild();
 }
 
 /**