You don't count! your profile says your a native German speaker! (probably why there was a winky face eh?)

It depends. 3 days for me. ;-)

This is a good question! I have done some German in Rosetta Stone in the past but I had a very poor knowledge of the cases etc. It has been 2 days and I'm nearly to the first lock with 4 courses mastered! However, this is due to me having much fun with the system and spending a lot of time practicing.