Acrobat Reader 7, sucks less slowly
Via adot's notblog*: get acrobat reader 7. Adot's right : acrobat reader loads pdf's from the web very very fast, which is good 'cause it used to take forever just loading to the browser, regardless of the size of the document. So far so good.
Adot also links to the direct way to get acrobat reader off of adobe's site.