Linux is certainly available on many new models of PCs here in Shanghai; seems to be gaining popularity.
Our 17 year old son just bought himself a new Acer notebook with nothing on it and installed Linux on it himself. Appears to be working great. Worked wonderfully on 1G of RAM and he then upgraded to 3G and the thing really flies. The graphics are tremendous!
I may dump my MS and let him load Linux on my units.
...like wireless,..sound,..graphics...that is a usual problem area,....and it varies by which distro is used,....
Of course you've got to have a server out there to talk to.
Just got a new Thinkpad, T61. I'm going to install Windows Vista (came with the laptop) as a guest OS under SuSE's Xen virtual machine server. Just to do it, haven't really had the need to run Windows for many years now. No more dual booting. Just call up and load Windows in a window.
New processors (Intel & AMD) have virtualization technology built in, so an unmodified guest OS' can be installed. But if you don't "need" Windows, Linux Rocks! So go for it.
I just upgraded from 512K RAM to 2GB on a P4 Toshiba running Ubuntu Intrepid, and performance increased nicely.
The graphics are tremendous!
IMHO Compiz Fusion is the bee's knees.