When I turn off the cache in Magento I get error from Magento in de Frontend in the Backend I get no error message.
Fatal error: Aborting! The New Relic imposed maximum PHP function nesting level of '5000' has been reached. This limit is to prevent the PHP execution from catastrophically running out of C-stack frames. If you think this limit is too small, adjust the value of the setting newrelic.special.max_nesting_level in the newrelic.ini file, and restart php. Please file a ticket at https://support.newrelic.com if you need further assistance. in /data/web/public/lib/Varien/Db/Adapter/Pdo/Mysql.php on line 861
Also when I connecting to the API and SoapUI I get the error.