Still coming out of depression + rise in mobile computing + Businesses avoiding Windows 8 (which has always been a big driver of prebuilt desktop sales) = this very obvious conclusion.
So far, Samsung and Acer (and one other, maybe Sony?) have been quite explicit in their blaming of Windows 8 for the massive sales downturn. Yeah, it's a factor, but definitely not the only one.
Not terribly surprising, I suppose. A lot of people jump to the conclusion that this downturn is the direct result of things like the rise in popularity of tablets. While I think that probably contributes quite a bit, I think equally to blame is the fact that computer hardware has simply been able to do what most people use computers for very well for quite some time now. People that mostly use their computer for e-mail/web, word processing, etc. are probably perfectly happy with hardware from 5+ years ago. There's just no reason for them to upgrade anymore.
More important than that: the business sector has always been the big driver of PC sales and the majority of the business sector has finished or is quickly finishing up (woo, I'm about 3 months away myself ^__^ ) their migration to Windows 7 so are buying less PCs and aren't jumping to Windows 8. Microsoft's kinda a victim of their own success here: for the past 2 years they've been pushing hard to get businesses to upgrade and so now most are
