Recently the MCPortCentral Official server has had a few difficulties, after spending a couple of hours on it I discovered that the world had been corrupted 'oh noes' and that LogBlock was not operating correctly 'gah'.
So, I personally upgraded the Ram on the server. Cleaned it up, kept a check on plugins, and everything seems to be working A-Okay.
So, go to the forum thread - http://www.mcportcentral.co.za/index.php?topic=995.0
Make an application, give it a go.