In Safari, I use two finger dragging with my trackpad (on a MacBook) to scroll through websites. I've noticed that whenever I try viewing a PDF document, (i.e. the URL in the address bar ends with .pdf) the scrolling sensitivity is very different than the normal Safari scrolling sensitivity. It scrolls way too fast (i.e. it's too sensitive).
My guess is that it's a problem with the Adobe Reader plugin which doesn't implement scrolling using the same algorithm as Safari's. Is there any way to fix this? What about using a different plugin for PDF documents besides Adobe Reader?