One of the more annoying facets of Acrobat is that Acrobat documents, by default, open in the browser when sought as a “link.” To change this behavior, go to Acrobat and go to Edit -> Preference -> Internet; disable “Display PDF in browser” and “Allow Fast Web View.” Now, when you click on a PDF link in IE or Firefox, the Acrobat program will actually open in a new Acrobat window rather than the browser.