SQLSTATE[HY000]: General error: 2006 MySQL server has gone away

#0 /srv/www/production/lib/Zend/Db/Adapter/Pdo/Abstract.php(254): PDO->rollBack()
#1 /srv/www/production/lib/Zend/Db/Adapter/Abstract.php(450): Zend_Db_Adapter_Pdo_Abstract->_rollBack()
#2 /srv/www/production/lib/Varien/Db/Adapter/Pdo/Mysql.php(111): Zend_Db_Adapter_Abstract->rollBack()
#3 /srv/www/production/app/code/core/Mage/Core/Model/Resource/Abstract.php(85): Varien_Db_Adapter_Pdo_Mysql->rollback()
#4 /srv/www/production/app/code/core/Mage/Core/Model/Abstract.php(257): Mage_Core_Model_Resource_Abstract->rollBack()
#5 /srv/www/production/app/code/core/Mage/Log/Model/Visitor.php(177): Mage_Core_Model_Abstract->save()
#6 /srv/www/production/app/code/core/Mage/Core/Model/App.php(1141): Mage_Log_Model_Visitor->saveByRequest(Object(Varien_Event_Observer))
#7 /srv/www/production/app/Mage.php(299): Mage_Core_Model_App->dispatchEvent('controller_acti...', Array)
#8 /srv/www/production/app/code/core/Mage/Core/Controller/Varien/Action.php(410): Mage::dispatchEvent('controller_acti...', Array)
#9 /srv/www/production/app/code/core/Mage/Core/Controller/Front/Action.php(57): Mage_Core_Controller_Varien_Action->postDispatch()
#10 /srv/www/production/app/code/core/Mage/Core/Controller/Varien/Action.php(351): Mage_Core_Controller_Front_Action->postDispatch()
#11 /srv/www/production/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(163): Mage_Core_Controller_Varien_Action->dispatch('view')
#12 /srv/www/production/app/code/core/Mage/Core/Controller/Varien/Front.php(174): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#13 /srv/www/production/app/Mage.php(448): Mage_Core_Controller_Varien_Front->dispatch()
#14 /srv/www/production/index.php(52): Mage::run()
#15 {main}