I've seen Scott Hanselman blogging about Foxit Reader for reading PDF's a couple of times. So when Adobe started thier shit about not wanting Microsoft to put a "Save as PDF..." button/menu option in Offie 2007, I figured it was time to try something new.
I also have had problems with Acrobat Reader not closing correctly so I have to "End Task" when I close windwos...
Anyway, I tried Foxit Reader and man it's fast! I didn't even have to run an installer. After using it for about a month I have only possitive things to say about it.