Piwik 2.7.0 strangles the server

Hello,

Without doing virtually anything, everytime i try to open Piwik the servers dies (entry-process spikes, but no cpu usages)… after several minutes (probably php die-time) those processes will go away and server will again start serving pages… but whenever i try to open piwik again the same happens, servers dies… i downloaded fresh piwik 270 zip and reuploaded on site, no effect. I would preffer not to do a clean fresh install and lose all the data.

In server logs i have this over and over again, hundreds of times

16 require_once(…) called at [/home/blissmed/public_html/piwik/index.php:46]

#15 Piwik\FrontController->dispatch(…) called at [/home/blissmed/public_html/piwik/core/dispatch.php:34]

#14 Piwik\FrontController->doDispatch(…) called at [/home/blissmed/public_html/piwik/core/FrontController.php:86]

#13 Piwik\FrontController->makeController(…) called at [/home/blissmed/public_html/piwik/core/FrontController.php:562]

#12 Piwik\Plugin\Controller->__construct(…) called at [/home/blissmed/public_html/piwik/core/FrontController.php:116]

#11 Piwik\Plugin\Controller->init(…) called at [/home/blissmed/public_html/piwik/core/Plugin/Controller.php:119]

#10 Piwik\Site->__construct(…) called at [/home/blissmed/public_html/piwik/core/Plugin/Controller.php:130]

#9 Piwik\Plugins\SitesManager\API->getSiteFromId(…) called at [/home/blissmed/public_html/piwik/core/Site.php:64]

#8 Piwik\Plugins\SitesManager\Model->getSiteFromId(…) called at [/home/blissmed/public_html/piwik/plugins/SitesManager/API.php:185]

#7 Zend_Db_Adapter_Abstract->fetchRow(…) called at [/home/blissmed/public_html/piwik/plugins/SitesManager/Model.php:59]

#6 Piwik\Db\Adapter\Pdo\Mysql->query(…) called at [/home/blissmed/public_html/piwik/libs/Zend/Db/Adapter/Abstract.php:755]

#5 Zend_Db_Adapter_Pdo_Abstract->query(…) called at [/home/blissmed/public_html/piwik/core/Db/Adapter/Pdo/Mysql.php:229]

#4 Zend_Db_Adapter_Abstract->query(…) called at [/home/blissmed/public_html/piwik/libs/Zend/Db/Adapter/Pdo/Abstract.php:238]

#3 Zend_Db_Statement->execute(…) called at [/home/blissmed/public_html/piwik/libs/Zend/Db/Adapter/Abstract.php:479]

#2 Zend_Db_Statement_Pdo->_execute(…) called at [/home/blissmed/public_html/piwik/libs/Zend/Db/Statement.php:300]

#1 PDOStatement->execute(…) called at [/home/blissmed/public_html/piwik/libs/Zend/Db/Statement/Pdo.php:228]

Warning: PDOStatement::execute(): Error reading result set’s header in /home/blissmed/public_html/piwik/libs/Zend/Db/Statement/Pdo.php on line 228

Fixed by deleting config.ini, reinstaling and keeping the tables and all the data… there is a bug though, something caused this.