Intermittently, I get one of three errors on any page of my XF forum. "An unexpected error has occurred" on white screen Google Chrome error "Error 139 (net::ERR_TEMPORARILY_THROTTLED): Requests to the server have been temporarily throttled." Mysqli statement execute error : Prepared statement needs to be re-prepared Zend_Db_Statement_Mysqli->_execute() in Zend/Db/Statement.php at line 297 Zend_Db_Statement->execute() in Zend/Db/Adapter/Abstract.php at line 479 Zend_Db_Adapter_Abstract->query() in Zend/Db/Adapter/Abstract.php at line 753 Zend_Db_Adapter_Abstract->fetchRow() in XenForo/Model/Thread.php at line 44 XenForo_Model_Thread->getThreadById() in XenForo/ControllerHelper/ForumThreadPost.php at line 152 XenForo_ControllerHelper_ForumThreadPost->getThreadOrError() in XenForo/ControllerHelper/ForumThreadPost.php at line 74 XenForo_ControllerHelper_ForumThreadPost->assertThreadValidAndViewable() in XenForo/ControllerPublic/Thread.php at line 41 XenForo_ControllerPublic_Thread->actionIndex() in XenForo/FrontController.php at line 310 XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 132 XenForo_FrontController->run() in /.../index.php at line 13 This error lasts for about ten minutes, and then the forum returns to functioning normally. I have tried disabling the small amount of (updated) addons I have installed, but that doesn't seem to have resolved the issue. Any thoughts?