Looks good to me
It could do with a bit of spicing up, like an animation or whatever of the ball falling "off the edge" and so on, but it runs smoothly even on my old excuse for a computer. Just do yourself a favour and put original ideas into it so it won't just look like yet another clone. And as said, a bit more eyecandy, make it more "lively". Then it could be real fun to play.
I did have loader problems too, though, it stayed blank until it was about 90% done loading, and first then it showed the loader.
That should keep you busy, good job! :)