MGDKing There are three sites on the box - one is a .NET shopping cart (http://www.vnetek.com) which loads fine considering the page size and ammount of data each page is. The other is a smaller web site which also has no problems (http://www.fusionconnex.com).
Worker Proccesses looked OK
BenAmada - I removed the extensions, the BlogRoll and the Twitter Widget and the added each back one-by-one - the culprit was the Twitter widget. Not sure why, maybe slow calls to Twitter
Thanks for your help MGDKing and BenAmanda