Navigatrix or Some Other ?

[PDA1]

I've been trying and running Navigatrix off of a usb stick.

However, I've found that I can't download and save files. Yes, I've created the stick as "persistent".

After spending way too much time working with Navigatrix (which is conceptually a great system) it's time to move on.

My requirements are;

- low PC power consumption
- os must be Linux based
- OS must be on a usb stick
- "lightweight" os- nothing fancy
- must have usable navigation software on it that's the same as on Navigatrix

Do you have any recommendations? Puppy?