Issue Drupal v6 admin pages slow

[iantresman]

Since upgrading from Plesk 11 to Plesk 12.5, my Drupal 6 admin pages, when I save configuration information (presumably to the mySQL database) have become very slow. What used to take perhaps 10 seconds, may now take upwards of a minute before control is returned.

I'm still running PHP 5.3.3 as an Apache module, and was wondering whether anyone else has experienced this, and been able to resolve it.