Originally Posted by pixellany
Unless you have lots of spare cash, I would not run off and buy a new laptop having only tried Linux on your existing one for just a few hours. On the other hand, you can simply buy a laptop pre-configured with Linux from any of several sources.
I kinda did just that. Bought a Compaq laptop from best buy. Slapped on Ubuntu and most everything worked, except for the nvidia drivers, and my wifi card.
But ubuntuforums.org had instructions on fixing my wifi (which required I ditch 64bit ubuntu).
If you have experience with laptops on Linux it's a pretty straightforward endeavor. But why guess when you can check the hardware specifications against one of the many Linux hardware compatibility lists... like the one on this site.
I agree with Pixelany though; if you don't have any experience with Linux on laptops, then you better be ready to read up, and keep a spare network cable around