PDO

Hi
I am installing drupal at http://drupal.des-us.com. It gives me the error that PDO is not enabled. I inquired with my web host, and it is enabled, which can be checked at http://web.des-us.com/test.php. They told me to contact the vendor. So why is drupal not installing here? I had installed it successfully some days before on the 26th of may.
I also have access to php.ini file, and I have checked that mbstring and pdo both are enabled.
Thanks

We're currently running project mercury on a live server and so far it's been working great.

We built it on a large amazon ec2 ebs backed instance using the following guide: http://groups.drupal.org/node/70268

The issue is that we need to install pdo and the appropriate pdo driver in order to correctly configure the drupal CDN module and fileconveyor setup.

Unfortunately we have tried adding the modules in via just about every guide on the internet and the only way to successfully get the module working for us is to reinstall php5 with pdo included which of course breaks mercury.

Abstract

Drupal 6.0 is revamped with Schema API, so what's next for Drupal 7.x? PDO for sure! With this powerful data-access abstraction layer, workload will much reduced for DB abstraction layer designers and developers, and finally benefit our contribute developers and end users.

By the way, together with the decision of Drupal 7.x + PDO, there is also some voice about moving PostgreSQL (and so other potential databases support, e.g. Oracle, DB2, MSSQL, etc) support away from core, but contribute; on the other hand, add official SQLite support into Drupal core, together with MySQL.

Is this really a good idea? Or even if it is possible? As an existing Drupal + PostgreSQL users, what will this affect your daily work? As a potential customer of Drupal + Oracle/DB2/MSSQL/etc, is this a good new for you, or just an evil? I would like to provide some brief idea for you within this article.