1.3 Update Signal 11 with PDO_MYSQL

Using the PDO_MYSQL adapter the automatic archive feature always leads to a apache thread death with SIGNAL 11 after upgrading to version 1.3. Version 1.2 worked great. The only solution was to switch from PDO_MYSQL to MYSQLI.

there is something wrong with your setup because it works fine with PDO as this is what most piwik users are doing. Make sure you update PHP and disable APC etc.