It's a really really huge file (68MB!) and it's coming across my reasonably-fast-but-not-outrageous DSL line. Depending on your browser and version of Acrobat, it might look like it's doing nothing until most of the file is in, and that could take a while.

You can go here to see the pages one by one and have a link to the PDF file, just so you can verify that your computer and my server are indeed connecting:

http://www.backglass.org/duncan/ps60_manual/

Duncan