SQLite3, works on one server but not the other.

[eluser]Unknown[/eluser]
So basically I have a site running SQLite its currently hosted on my VDS threesoftwarekings.com, if i load this I get a PDO error which I'm assuming is the main cause I've questioned my hosting company about it no one seems to know about PDO I've had a go at installing PDO and the end result is, it kills my server.
This site was previously hosted on a shared server with 1&1, which it worked spot on no problems I am assuming they have PDO.

Is their any real instructions for installing PDO or is it even required, I don't understand what PDO is or what it does this is a new area for me, trying to find information on PDO seems to be a struggle.

I'm running Ubuntu, and I am so lost.

[eluser]Unknown[/eluser]
I just solved this I had to update my whole system by doing the following:

apt-get update
apt-get -u upgrade

Then I had to uninstall my perl scripts as well to then reinstall:

pecl uninstall pdo_sqlite
pecl install pdo_sqlite

Restarted apache and done!