I picked up a tip on getting Acrobat Reader 6.0 to load faster from John Roller’s blog post.
1) Go to the \Program Files\Adobe\Acrobat 6.0\Reader folder
2) Take everything except EScript.api, EWH32.api, IA32.api, Search.api and Search5.api from the plug_ins folder and move it into Optional folder.
keep weblink.api in too if you want to click on urls within the PDF. IA32.api is not necessary but you need to also keep printme.api.