PHP 5.2.3 anyone running this on vbulletin?

[foulplay]

I have PHP 5.2.1 installed, my question is: Do I need to upgrade to the latest PHP 5.2.3 and is it compatible with vbulletin?

[Dismounted]

Do you need to upgrade? Not really. Many people don't upgrade for a year or so.

Is it compatible with vBulletin? Yes.