Build Id: Mozilla/5.0 (Maemo; Linux armv7l; rv:2.0b12pre) Gecko/20110217 Firefox/4.0b12pre Fennec/4.0b5 ID:20110217130947 Note: This is from litmus testcase https://litmus.mozilla.org/show_test.cgi?id=12312 Steps to Reproduce: 1. Go to www.google.com 2. search for "irs pdf" 3. Click on the first entry that links to a .pdf file Actual Results: I get a "Cannot open file. Tap to save" dialog and the "open" button is disabled in the download manager row entry for the .pdf file. Expected Results: The app manager opens and opens the pdf reader the application.