I am very much a believer in the "if it ain't bust don't fix it" philosophy. I have two domain controllers running 2003 standard and both are lucky if they get a windows update, let alone have SP1 installed.
I have just bought a new server which I am going to introduce as a member server in the next couple of weeks. The version of 2003 standard that came with this already has SP1 installed. So, are all my servers going to play nicely together or is there any reason why they all need to be service packed to the same level?
And if I do install SP1 on my 2 DC's, am I going to have any nasty surprises in store?