Broken day Stats #2640

Like you should see at the link the stats for this day (26-08-2011) are somehow broken. The grahp shows zero but the search-engine stats and so on sho hits. There should me some routine to repair check and repair such things

http://piwik.dasch-tour.de/index.php?module=CoreHome&action=index&idSite=1&period=day&date=2011-08-26#module=Dashboard&action=embeddedIndex&idSite=1&period=day&date=2011-08-26

This issue is a dupe of #2548, which is fixed for the next version. Update to the current qa build or delete the archives for the given day and reprocess them.