I, on the other hand, have discovered that this little thing called Foxit Reader is /way/ faster.
Yes, I know, Acrobat 6 can be made faster by stripping out modules. Acrobat 4.x is faster still. But Foxit Reader is /even faster than that/. And it doesn't bug you to upgrade a million little things every single time it opens like Adobe Acrobat seems to. :D