It is so annoying, cuz i wan to play with my save file in another wii so i dont have to unwire mine, and i just cant copy to the SD card, neither the Mario&Sonic Olympic file :S

They probably don't want people just sticking a SD card in any old Wii and unlocking everything for people or, even worse, downloading save games to unlock everything.

i was looking through the instruction booklet yesterday and it said something like:

"game data cannot be copied, but some vault data can be"

vault data is pictures, movies, etc
but yeah, i don't think its possible

That is extremely poor and gets a Boo from me.

If there is Save data that links to friend code (LIke your DS online code) just have that seperate, but uncopyable. Not the entire thing.

I think it is just with mario and sonic because I backed up all my file and it worked for all of them except mario and sonic.