Everyone who says the mac mini server is overpriced has literally no idea what they are talking about. It is insanely cheap. Look at this:
http://configure.us.dell.com/dellst...=us&l=en&s=bsd&cs=04&kc=rec_server_networksol
This is Dell's starter server for small business. It comes with a Microsoft server license. The mac mini either matches or beats it in virtually every spec. It's core 2 duo trounces the pentium, it has faster RAM, and twice as much disk space. It does all this while being WAAAAY more power efficient and compact, and costing hundred less.
Wow.
Yes, this product isn't perfect. There are currently 4 main problems with it:
1) drive speeds. It needs to have 7200rpm drives as the default. It really matters in servers
2) Ease of entry. This has always been a problem with mac minis, but it matters a lot more when dealing with people who actually upgrade their product periodically.
3) support for 4gb RAM DIMMS. They are expensive as hell right now, but in 2 years people will want to upgrade to them.
4) Network expansion. Doesn't have to be anything fancy. Just an expresscard slot should suffice for people who need that extra ethernet or esata port.
There are a few people for whom these issues might be deal-breakers, but for everyone else, this is a flawed but incredibly well priced entry server. This is probably the ideal server right now for mixed PC and Mac businesses with 25 or fewer employees.