As Xoturaly questioned this in another thread, I pass the info concerning the levels up from 103.
This obviously only concerns very few people(4?), and it might interest you or not, but in case it does, here goes:
In level 103, break down the door, go as far left as possible (over the lemon or where it was), jump to the left, while keeping the leftbutton in, and throw a bomb at the top so as to get to the left of the wall.
In level 104: don't be too much of a glutton
level 108: you have to get it first go round
level 115: no saving
Bear in mind that I haven't got to the 103, so I can't be clearer, and that info is very scarce (and only on the french site) as players were not allowed to talk about levels 100+.
Also, most people seem to agree on the fact that it is easier to pass the wall when your computer lags, (which is too much for an uneducated mind like mine)