I solved a scrolling problem that may or may not be the same as discussed here.
Scrolling was very slow and inconsistent in reader when "Fit One Full Page" was selected. Toggling "Fit to Width Scrolling" solved the problem.
Both of these commands show in my Toolbar. They can be added through View>Show/Hide>Toolbar Items>Page Display menus.
Adobe Reader 11.0.07
MacBook Pro
OS X 10.8.5