For some strange reason, Ubuntu 12.04 and Mint 13 do not run correctly on my primary computer - probably a video driver issue. However, I ran Puppy all day yesterday.
What was the problem with Ubuntu?
When I first installed it, the OS didn’t utilize some of my screen, as if my screen were smaller- leaving the sides black and inacessible.
That was fixed easily enough. I had to increase the screen resolution.