We have a total of 312 sites loaded into Piwik, only 2 or 3 of which get substantial traffic. I had the default set to show the “all sites” dashboard upon login with the admin account. It was loading slowly, but loading, until recently, and now I get the following error:
Fatal error: Maximum execution time of 300 seconds exceeded in C:\inetpub\wwwroot\piwik\libs\Zend\Db\Statement\Pdo.php on line 228
Fatal error: Maximum execution time of 300 seconds exceeded in C:\inetpub\wwwroot\piwik\libs\Zend\Session.php on line 677
The “All websites” page being slow to load is then another problem, which was just fixed in SVN a few days ago.
The page can now load thousands of websites in a few seconds.
if you update to latest beta (which works fine) you can enjoy a very fast “all websites” dashboard (assuming you setup cron script as explained in doc above).
See 301 Moved Permanently