Cymric:
perhaps a little more stable, although I have heard good stories about XP and 2000.
And I've seen it with my own eyes - I use Windows XP and my recent uptime was 14 days -- turned it off during heavy thunderstorm. And my friend, a Pegasos user hasn't seen uptime longer than 1.5hour on his MorphOS.. so it all depends. Surely we can't generalize that Windoze is clumsy, hangs a lot and (quasi)AmigaOS is great, fast and stable etc... that simply all depends