Joomla 2.5.11 Installation

I have been trying, and failing, to get a Joomla 2.5.11 install to get past the database set up part of the installation.

I know I have the credentials correct, I’ve double checked this by logging to the DreamHost panel and accessing the database using the same credentials.

I also tried this with Joomla 3.1 and this gets past the database connection but fails when creating the Joomla database tables.

Any help as to why is happening would be greatly appreciated.