Having already loaded the full install of 2003 Enterprise on a production network, its actually working very well. Surprisingly enough its incredibly stable. Id have thought it would be buggy as hell with all the eye candy they added to make it look like XP Pro, buts its actually pretty nice.
I loaded it on a Dell Poweredge 1650 w/ 1.4Ghz P3 and 512MB ECC
Thats actually the slower of the 4 boxes I set up too, and its running better then the others.
The damn Exchange 2000 server is on a PowerEdge 2650 with dual 2.6 Xeons and 1GB ECC and thats running Win2K Adv server and I tried loading some smaller services on that one with incredible difficulty. It was dogging bad. Mostly with memory as it seems EX2K is a memory hoarder. Never set it up before, was my first time as I usually stick with 5.5 in an NT/2000 environment but I said, "What the Hell" this time. Thats an entirely different posting Ill have to make altogether.

But 2003 seems to do very well with memory management. That damn server is running Symantec Corp 8 Server, DNS, WINS, and Active Directory and you'd never know it was doing all that. Its just hummin along.
Ill give it to MS for finally doing something about the problem with all windows versions of eating up RAM like candy and never giving it up when its through with it.