Same here: 3.7a2pre, Xubuntu 9.10 amd64
(firefox-3.7:6655): GLib-WARNING **: g_set_prgname() called multiple times
** (firefox-3.7:6681): WARNING **: Serious fd usage error 14
** (firefox-3.7:6681): WARNING **: Serious fd usage error 12
Same here: 3.7a2pre, Xubuntu 9.10 amd64
(firefox-3.7:6655): GLib-WARNING **: g_set_prgname() called multiple times
** (firefox-3.7:6681): WARNING **: Serious fd usage error 14
** (firefox-3.7:6681): WARNING **: Serious fd usage error 12