I don't think so. The user interface still looks like a dog's breakfast. When was the last time you used Linux without opening a terminal session? Installing new software can be incredibly tedious and error-prone. Drivers may not work or be installed and need to be hunted down (the author raves about how everything just worked out of the box, except of course that HP printer driver, which he had to find - not easy - and install). Windows 7 and MacOS X are ready for prime time. Linux is still an OS for hackers.
I disagree on "Installing new software can be incredibly tedious and error-prone" with centralised package management, I much prefer installing something on linux than in windows, all it takes is "pacman -S" whatever, or alias that to something shorter, it also means searching for software is easy. In windows I have to go and search for it on the net etc.
