Perfomance problem after 1.0 -> 1.1 update

Hi!
After 1.0 - 1.1 update i have trouble with perfomance of my server: LA was 1-2, and now 10-12, all sites are working sloooow

In the htop i see many process like this:

/usr/bin/php5 /var/www/piwik/cron/…/…/index.php – module=API&method=VisitsSummary.getVisits&idSite=2&period=month&date=last52

I can’t disable live plugin in piwik because my server send me 504 error then i tying to do it

sorry for my bad english

Hmm i solved my problem, after restarting mysql server i disabled Live plugin and now LA is normal