Беру 64-битную версию отсюда: http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/
Запускаю:
pacify@optima:/usr/local/firefox$ ./firefox-bin
XPCOMGlueLoad error for file /usr/local/firefox/libxpcom.so:
libxul.so: cannot open shared object file: No such file or directory
Couldn't load XPCOM.
pacify@optima:/usr/local/firefox$ LD_LIBRARY_PATH=`pwd` ./firefox
XPCOMGlueLoad error for file /usr/local/firefox/libxpcom.so:
libdbus-glib-1.so.2: cannot open shared object file: No such file or directory
Couldn't load XPCOM.
Чего не хватает?