User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8a4) Gecko/20040927 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8a4) Gecko/20040927 Here are the detailed steps to reproduce the problem I am having. I've tried it twice and received the same results both times. 1. Uninstall Mozilla 1.7A2, don't delete the directory 2. Install Mozilla 1.7A4 (regular install, staying in memory) 3. Go to: http://www.gamefaqs.com/console/ps2/game/28525.html 4. On this page right click on the 'message boards' link and choose 'open in a new window' 5. Go to the message boards tab 6. Choose a message and right-click open in a new tab 7. Go to this message tab 8. Right click on the tab header. It reads 'GameFAQs: General Message List'. Observe that the menu doesn't appear or takes a long time to appear 9. Right click on any link. Observe that the menu doesn't appear or takes a long time to appear. 10. Try to drag the mozilla window/app to a new location. It fails. Mozilla has basically froze 11. Close Mozilla with Ctrl-Alt-Delete And finally: 12. Do the same without opening the links in new windows. Observe Mozilla 1.7A4 works fine Reproducible: Always Steps to Reproduce: See the details section above. Actual Results: Mozilla crashed when the steps were done using tabs. It was fine if tabs weren't used. Expected Results: It looks like opening tabs causes Mozilla 1.7A4 to crash. Obviously that shouldn't happen.