With my sandisk 256mb card, I could corrupt the card every time simply by suspending the zaurus a couple of times.
It didn\'t do the folder inside folder trick, it just used to say i/o error all the time and hang copying files etc.
This was with it formatted as ext2, it seemed quite stable on fat however.
I now have a lexar 256 which has been using ext2 for nearly 6 months without a single problem, the sandisk card is now in my camera where it is happy.
Peter.