It seems whatever GC game I play on my Wii with the memory card in, the Wii decides to eat up the data on my memory card and say it doesnt exist and write over it. I have lost my SSBM data, My Mario Kart Double Dash data this way. It always happens i would play it on my GC for some time and did a test. Popped the game into my Wii and it ate my data. First it would say that data does not exist for the game and ask if I wish to create a new save. Anyone know why? Some stuff.>. My wii is upright on a Chill Station and it is fully internet capable. It is fully updated. Nothing more I know that might help. Never used a SDK card either.