I\'ve had a 64M lexar mmc card since I\'ve had the 5500, I tried a 128M sandisk card, formatted it ext2, it died, rma\'d it, got it back and tried ext2 again, same results. I gave up on that, still have the dead card, I should rma it again and give it to a ppc user at work, it\'ll probalby just work with it\'s original fat format.
That experience made me not like sd cards. I don\'t know what the problem was though, some said it had to do with the controller being changed in the card.
I would like to have a larger sd/mmc card though.