Piwik_Archive_Array_IndexedBySite::getDataTableFromNumeric() algorithm won't work if data is stored in different tables
As outlined here: http://forum.piwik.org/read.php?2,81491
Right now the problem occurs again. Output of date-command on the Server gives:
Wed Oct 30 18:28:28 CET 2013
(Note that the EU switched back to "normal/winter time" 3 days ago.)
Taking into account the linked forum thread, the error so far was noticed on these dates:
Can you try again with Piwik 2.0 ?
Somehow this error is gone from the source code, so maybe we've fixed as side effect of refactoring #4278