firefox/run-mozilla.sh: line 424:  5113 Segmentation fault      "$prog" ${1+"$@"}
if you cause this error in Linux.
1>. Delete the your home directory ".mozilla" and ".macromedia"
2>. Install firefox again
3>. OK
from :
http://bea.cabarel.com/modules/PunBB/viewtopic.php?pid=243
  Deleted every instance of firefox, mozilla-firefox and .mozilla.
  Running mozilla just recreated any deleted user folders.
  Downloaded and reinstalled Firefox from
www.getfirefox.com
and installed it to the user home directory under a sub-directory called programmes.
Both Firefox and Mozilla run OK now.
I think Mozilla overwrote and corrupted the Firefox generated directory .mozilla and subdirectory.mozilla/firefox
After the clean up and reinstallation, every was rewritten correctly.
Looking back, it might have been necessary to just delete the .mozilla directory.