I'm using Nokia Ngage (Not QD) with Apacer 512MB MMC and has no problem. But When I try using 1GB MMC, my Ngage performance decreasing and very slow. Furthermore, it cannot be switched off. Can I use 1GB MMC on Ngage? Is there anyone using Nokia Ngage with 1GB MMC without any problem? What type or brand of MMC that I should use for it to run smoothly?