this is not a question, but a hint for people, who are using the Right Zoom extension by BlazingTools on a Mac. It (at least v. 1.7) doesn't seem to play well with Adobe Reader and this might also apply to Acrobat Pro. In my case Adobe Reader got really slow as soon as a document was opened. Every click on a menu item or button caused Adobe Reader to hang for several seconds. When I excluded the Reader from interacting with Right Zoom (via RZ-options), everything was fine again.