I know what your thinking and I was thinking the same thing, who paid for the study to prove this. You guessed Microsoft did. Interesting read but I am sure that those of you that are hard core Linux users will contest their results.
As a side note. The dedicated server that I have for this websites has had pretty terrible reliability and requires re-booting every couple of days. But a old die-hard Windows NT box that I have running similar services for some other websites I have gets re-booted every 90 days whether it needs it or not. So thus far I am not drinking the Linux Kolaid. [eWeek]
Todd, I think the problems with your dedicated linux server has a lot more to do with what you installed on it and how you installed it then Linux itself.
I have servers in Hong Kong, UK and the USA and reboots are very seldom and only seem to occur when one of my hosting customers end up with a worm or trojan, or try to install non-standard software on to their account. Not all my servers are dedicated, but I do use Apache and cpanel for software and it makes a big difference.