I'd suggest spending more time with the new Solaris. It has some advanced server management capability that Linux doesn't offer, plus Sun is the originator of Java technology.
I think we're going to see significant growth of Solaris over the next few years, as it will offer a standardized platform (unfragmented like "Linux") that commercial vendors won't be afraid to develop commercial applications and hardware drivers for. Lots of programmers are rightfully afraid of mixing their wares up too much with GPL code, as they will send their lawyers after you to confiscate your code if you accidently tie any of yours too closely to theirs.
http://www.forbes.com/2003/10/14/cz_dl_1014linksys.html
Never tried it. I guess I should give it a try. Do I get it from Sun or do you recommend somewhere else? What version is best? Are there different types?
Is there anything about that installation that I should know/fear?
Can I install it with Linux and Windows?
Solaris is a great OS, but saying its not fragmented is like saying RedHat is not fragmented. Compare Solaris to other UNIX operating systems and there is a huge difference.