Just set up a cuouple of servers on Fedora Core 4. Nice system, especially considering its free. In addition to that, you still get free patches and fixes through Redhat's up2date program.
Well youer using up2daet (a redhat program) but youre not pulling the patches off of RHN (redhats services) youre pulling them of of Fedora's site through, I believe, yum..
You do know China takes a free copy of Red Hat and renames it Red Flag over there? Don't have to pay a dime back to the US either.
If there's anything Fedora 4's giving away to Windows I couldn't tell you what it was.