>As for performance, I'll disagree alittle with Mark. R5 of Notes/Domino has been tested extensively with heavy usage and the numbers are fairly good. Of course, the hardware has to fit the circumstances. If you have a lot of users, you need a power box to run it on. And be sure to have alot of memory available. It will suck it all up.

I'll agree with you on those points. Notes Server and the Client are memory hogs. Maybe its just our servers where I work that are lacking on the horsepower. We are running R5/Domino, put our performance ain't that great. Of course we are still mostly 16mbps token-ring on a 100BaseT ethernet backbone and aroung 1000 users. We have 2 mail servers and 1 app server.