I'd suggest the following changes:
IT should bounce off the wall more, it's just kinda a dead ball once it hits it.
Also the bouncer at the bottom should bounce it more, since it does not actually bounce it back into the area of play. Just delays the inevitable a bit.
Sadly, level 7 would not load for me.
I went back to the menu and then selected play, it showed the first 6 levels complete, but the number 1 in the 7th circle. selecting it again failed to load the level , it just hung at the spinning symbol over the level 7 circle.
I tried again from the beginning, but it again hung on loading level 7.
All in all, one of the better games I've seen.