diff --git a/core/Plugin/ControllerAdmin.php b/core/Plugin/ControllerAdmin.php
index 41c14ff67ba..72ef9002874 100644
--- a/core/Plugin/ControllerAdmin.php
+++ b/core/Plugin/ControllerAdmin.php
@@ -27,6 +27,8 @@
  */
 abstract class ControllerAdmin extends Controller
 {
+    private static $isEacceleratorUsed = false;
+
     private static function notifyWhenTrackingStatisticsDisabled()
     {
         $statsEnabled = PiwikConfig::getInstance()->Tracker['record_statistics'];
@@ -97,6 +99,37 @@ static public function displayWarningIfConfigFileNotWritable()
         }
     }
 
+    /**
+     * See http://dev.piwik.org/trac/ticket/4439#comment:8 and https://github.com/eaccelerator/eaccelerator/issues/12
+     *
+     * Eaccelerator does not support closures and is known to be not comptabile with Piwik. Therefore we are disabling
+     * it automatically. At this point it looks like Eaccelerator is no longer under development and the bug has not
+     * been fixed within a year.
+     */
+    public static function disableEacceleratorIfEnabled()
+    {
+        $isEacceleratorUsed = ini_get('eaccelerator.enable');
+
+        if (!empty($isEacceleratorUsed)) {
+            self::$isEacceleratorUsed = true;
+
+            @ini_set('eaccelerator.enable', 0);
+        }
+    }
+
+    private static function notifyIfEAcceleratorIsUsed()
+    {
+        if (self::$isEacceleratorUsed) {
+            $params  = array('<a href="http://dev.piwik.org/trac/ticket/4439">', '</a>');
+            $message = Piwik::translate('CoreAdminHome_EacceleratorNotCompatible', $params);
+
+            $notification = new Notification($message);
+            $notification->context = Notification::CONTEXT_WARNING;
+            $notification->raw     = true;
+            Notification\Manager::notify('ControllerAdmin_EacceleratorIsUsed', $notification);
+        }
+    }
+
     /**
      * Assigns view properties that would be useful to views that render admin pages.
      *
@@ -123,6 +156,7 @@ static public function displayWarningIfConfigFileNotWritable()
     static public function setBasicVariablesAdminView(View $view)
     {
         self::notifyWhenTrackingStatisticsDisabled();
+        self::notifyIfEAcceleratorIsUsed();
 
         $view->topMenu = MenuTop::getInstance()->getMenu();
         $view->currentAdminMenuName = MenuAdmin::getInstance()->getCurrentAdminMenuName();
diff --git a/core/dispatch.php b/core/dispatch.php
index 42e5a950f7b..a0a4e312db7 100644
--- a/core/dispatch.php
+++ b/core/dispatch.php
@@ -11,6 +11,9 @@
 use Piwik\Error;
 use Piwik\ExceptionHandler;
 use Piwik\FrontController;
+use \Piwik\Plugin\ControllerAdmin as PluginControllerAdmin;
+
+PluginControllerAdmin::disableEacceleratorIfEnabled();
 
 if (!defined('PIWIK_ENABLE_ERROR_HANDLER') || PIWIK_ENABLE_ERROR_HANDLER) {
     require_once PIWIK_INCLUDE_PATH . '/core/Error.php';
diff --git a/lang/en.json b/lang/en.json
index 1dbcea0f442..da10eeefa09 100644
--- a/lang/en.json
+++ b/lang/en.json
@@ -585,7 +585,8 @@
         "PluginSettingsIntro": "Here you can change the settings for the following 3rd party plugins:",
         "PluginSettingsValueNotAllowed": "The value for field \"%s\" in plugin \"%s\" is not allowed",
         "PluginSettingChangeNotAllowed": "You are not allowed to change the value of the setting \"%s\" in plugin \"%s\"",
-        "PluginSettings": "Plugin settings"
+        "PluginSettings": "Plugin settings",
+        "EacceleratorNotCompatible": "You are using the PHP accelerator & optimizer eAccelerator which is known to be not compatible with Piwik. We have disabled eAccelerator therefore which might affect the performance of Piwik. Read the %srelated ticket%s for more information and how to fix this problem."
     },
     "CoreHome": {
         "InjectedHostWarningIntro": "You are now accessing Piwik from %1$s, but Piwik has been configured to run at this address: %2$s.",
diff --git a/piwik.php b/piwik.php
index 8f9a68d6372..263b3b0de73 100644
--- a/piwik.php
+++ b/piwik.php
@@ -35,6 +35,11 @@
 
 @ignore_user_abort(true);
 
+require_once PIWIK_INCLUDE_PATH . '/core/Plugin/Controller.php';
+require_once PIWIK_INCLUDE_PATH . '/core/Plugin/ControllerAdmin.php';
+
+\Piwik\Plugin\ControllerAdmin::disableEacceleratorIfEnabled();
+
 require_once PIWIK_INCLUDE_PATH . '/libs/upgradephp/upgrade.php';
 require_once PIWIK_INCLUDE_PATH . '/core/testMinimumPhpVersion.php';
 require_once PIWIK_INCLUDE_PATH . '/core/Singleton.php';
@@ -78,6 +83,7 @@
 if (!defined('PIWIK_ENABLE_TRACKING') || PIWIK_ENABLE_TRACKING) {
     ob_start();
 }
+
 if ($GLOBALS['PIWIK_TRACKER_DEBUG'] === true) {
     require_once PIWIK_INCLUDE_PATH . '/core/Loader.php';