This problem evolved as follows:

1. Entered pico filename at the prompt and got 'file not found'.
2. Decided copy pico into a directory specified in the PATH variable. Entered pico filename and got 'segmentation fault'.
3. Deleted pico from said directory and (figuring I'd bring the mountain to Mohammed) modified the PATH variable to include the path to the original pico file.
4. See 1.

Now any time I enter 'pico' at the command prompt I get 'segmentation fault'.

I'm running MEPIS 2004.05 bets, which has worked perfectly until now. I've searched this and other forums and have found much discussion on 'segmentation fault' but not many conclusions. Any help, advice or just a direction to go in would be greatly appreciated.