By the way, SD have 1Gb at the moment, and MMC is 256Mb for now..
Personaly I think, that it (MMC) MUST work on SL, coz it`s same structure.. And theoretically (as I have readed) that technology of MMC is possible till 2Gb not bigger, but it is possible that 256 dosen`t work, coz its locked in flash..
Correct me, if I`m wrong..