It's only sad if you believe Google Trends is a substitute for deployment numbers.
Without even getting into issues of cross-brand penetration and what that means for doing comparative Google trending...if we just look at Ubuntu as a brand you'll see that the Google trend doesn't really make sense. It's been essentially stagnant across 2009 and so far in 2010. That's in direct conflict with the public statements Canonical executives have made concerning their estimated userbase growth over the same time period.
Nor is Google trends a reliable measure of relative deployment popularity. For example Google Trends shows exactly the opposite relative relationship between blackberry and iphone that the latest market survey data shows. Google Trends would suggest Ipod is the market leader..when the more traditional market survey says its blackberry.
Anyone holding up Google Trends data as a meaningful surrogate for product popularity is wasting your time and giving you a false sense of reality. Noone, anywhere, has a self-consistent testable market penetration interpretation of Google Trends that holds up to scrutiny as a valid analysis methodology. Its an easy thing to reach for, but it has no intrinsic value as a market penetration metric.