I have not seen Linux at only 1% or anywhere near in the last ten years, even on Windows-centric sites it runs at least 3-4%.
You may be seeing something else, but I'm not seeing Linux as insignificant, and I'm seeing Mac as much higher than you claim as well. Likewise, the trend I'm seeing over the past year is Linux is growing at the expense of Mac, mostly, but Windows is declining a bit as well (about 3% over the past year, about 4% over the past 2.)
XP is still the most popular version, at 63%, of all Windows hits over the past year. Vista is number 2, at 25%, and 7 is just getting started at 3.5%. I see as many hits from NT over the past year as 7. But the trend is that Vista and XP hits are declining in favor of 7, with XP dropping to about 59% and Vista to 18% with 7 picking up the difference.
Anyway, that's what I'm seeing these days. I don't see Linux at all as marginal as you're seeing it. *shrug*
Just roamed the web trying to see if I could find any data to support your claims. I Absolutely cannot find anything near what you’re reporting.
Look at this link:
http://en.wikipedia.org/wiki/Usage_share_of_desktop_operating_systems
It shows that estimates range from 0.37% to 1.55%, with an average of 1.03, or 1.12 including Droid.
I double checked my past posts, seeing if I wrote anything that you could interpret as a guess as to Mac’s share. Nope. Never did.