User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 Firefox crashes when clicking the BACK button after loading and viewing a fully loaded pdf using Adobe Acrobat 6.0 professional. Reproducible: Always Steps to Reproduce: 1. Go to a website with a link to a PDF 2. Click the link and let the PDF fully load (no problem) 3. Click the BACK button 4. Browser crashes Actual Results: Restarted Firefox Expected Results: Return to the previous web page

*** This bug has been marked as a duplicate of 219987 ***