My first message here after many non conclusive research about my problem. So I'm administering a drupal website and I have migrate all application to new version: PHP 5.3.5 - 5.4.16 Apache 2.2.17 - 2.4.4 MySQL 5.1.36 - 5.6.12 With the new Wamp version. Also update Drupal from 6.19 to 6.30. I have update it by uninstalling everything in the server and reinstalling the new version. Since this update the website sometimes become unresponsive till we restart wamp. No warrning and no error in event log. Can somebody help me with this problem? I also cannot enable SSL, after configuring it wamp won't start. I have do many research and test but I still have many issue. Here I paste my configuration files: httpdconf: http://pastebin.com/qq1YvPKe httpdsslconf: http://pastebin.com/c4JnFyMw phpini: pastebinDOTcom/y8a30id6 Thanks in advance.