Happens every time for me on 0.9.9. Do the following to reproduce: 1. Go to http://bugzilla.mozilla.org/query.cgi 2. Select UNCONFIRMED under Status 3. Select Browser under Program 4. Select all the DOM components under Components 5. Check the radio button beside "Remember this query, and name it:" 6. Enter "All DOM Unconfirmed" or some other text into the following textbox 7. Check the checkbox under followed by the text "and put it in my page footer" 8. Submit 9. Hit the back button After hitting the back button Mozilla crashes.

Do you have a talkback ID ?

This was supposed to be fixed by bug 127569.

It was. The fix didn't make it into 0.9.9 (bug 127569 comment 8; bug 108308 comment 18). Marking dupe. *** This bug has been marked as a duplicate of 127569 ***