Class 'Piwik_Tracker_Cache' not found in /var/www/html/p/core/Tracker/Visit.php on line 973

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/

Download fresh 1.11 and reupload all files: some were not uploaded correctly.