Adobe Acrobat has sucked for quite some time. Actually it has sucked since version 6.0. Now there is a great replacement for it.
Foxit (http://www.foxitsoftware.com/pdf/rd_intro.php)
It's small and fast and you simply download a single exe and execute it. No fuss no muss and did I mention fast? It smokes. It's also free. This has to be one of the best pieces of software I've seen in a long time.
This is going into the Pragmatic SDK.