Re: Mainstream distributions work on most hardware without a problem,
In my fairly long experience it's *recent* laptops, not old ones, that have a problem with hardware drivers when installing linux. For a few recent laptops I've had to get a newer kernel, or install the very latest firmware (usually wifi card related), or perhaps tweak the display config. Nothing too demanding, but I imagine more than enough to put off any not-especially motivated windows user, and certainly reasonable grounds for a gripe or two.
But old laptops? I don't ever recall having a problem.