Since the upgrade to VSD7 none of the pdf documents want to load after re-syncing. (used to work just fine before)The CREATE LINK, "Link to document, Browse" function will not work with a PDF file.
Also, it seems to keep two radio buttons selected at once...when you choose link to "document" the radio button previously used also stays selected?? Clicking the document function opens the browse window automatically without having actually clicked the browse to button.The only way to get the PDF files to work was to use the "link to url" function and then type in the location of the pdf file on the server after it was uploaded using ftp.
Using IE when I clicked on the pdf link, it would just reload the same page with the link on it....almost like a refresh button. Any ideas.

I found that when I first opened my site in VSD7 a few days ago, the links for my pdfs were broken. I just went in and re-assigned the links (using the document part, not the URL), and it's working fine. It was a pain to go back and re-assign the correct document path, but it did work.

Yes, after updating to VSD 7, you will need to re-link all .pdf files.