I just re-tested with 0.4b, and it is faster like you suggested...
simple1: 50 fps
simple2: 31 fps
It was 45/25 before.
One bug though, It seems like simple3 doesn't initialize the screen correctly until the first stylus press. The top portion of the screeen (sometimes just a few lines, sometimes a 1/4 of the screen) stays white, obscuring the text, until I use the stylus.
Wait, 2 bugs, simple2 exits after running for a while. I see nothing in the code that would make it exit after a certain amount of time. I assume it's a bug as well, but I can't see any errors.