Since using the autoupdate to update to 1.11 I get the following error :S
[Fri Mar 08 21:02:01 2013] [error] [client 213.104.152.176] PHP Fatal error: Class 'Piwik_Tracker_Cache' not found in /var/www/html/p/core/Tracker/Visit.php on line 973 [Fri Mar 08 21:02:31 2013] [error] [client 213.104.152.176] PHP Fatal error: Class 'Piwik_Tracker_Cache' not found in /var/www/html/p/core/Tracker/Visit.php on line 973, referer: http://www.XXXXXXXX.org/ [Fri Mar 08 21:02:34 2013] [error] [client 213.104.152.176] PHP Fatal error: Class 'Piwik_Tracker_Cache' not found in /var/www/html/p/core/Tracker/Visit.php on line 973, referer: http://www.XXXXXXXX.org/