Forum vBulletin 4.0 requires PHP version 5.2 or greater
 

Hello
I'm trying to upgrade my vB forum, but I can't, I'm getting this error message:
vBulletin 4.0 requires PHP version 5.2 or greater. Your PHP is version 5.2.X-servage6, please ask your host to upgrade.

Note that the message mentioning that I have PHP 5.2, so what's wrong?

Thanks