The behavior when moving the mouse wheel fast is working as designed. If you would like more visible scrolling to happen, change the scroll speed to something slower, such as 0.2.
bizoo: will fix the issue with the buffer not updating with goto anything. I have not yet been able to trigger any 100% CPU usage scenarios however.
atambo: that's an oversight (2052 64 bit linux was built under a different environment), will resolve for the next build.
adzenith: it sounds like the magic trackpad is manipulating the fake scroll bars, rather than sending mouse wheel messages. The fake scroll bars won't interact nicely with smooth scrolling, I'll fix that for the next version.