[N3WBI3]

Keep in mind that uptime is not just a measure of how often it crashes but how often you have to restart it due to resource contention or general maintenance patches..

[zeugma]

These are most of the servers that I support right now. All are Unix .Uptime measured in days:

 

[Golden Eagle]

And every time we've compared the 2 on Netcraft, Microsoft has had a longer uptime than Red Hat, so your point is?