I have just downloaded Macpup and for what it cost (nothing) and for the ISO size (200Mb) i am just amazed.
First of all it booted fine on my PC, avoiding the sort of errors that i often run into with Ubuntu, and secondly, my Belkin WLAN USB card worked OUT OF THE BOX with Macpup. I downloaded Puppy Linux Dingo a few months ago and was impressed - but this is much better!
Well done to all developers on creating such a good OS!