firefox, thunderbird crash on start

[Russell L. Carter]

Hi folks,
On about a month old -stable amd64, recent, up-to-the minute
firefox and thunderbird are crashing on startup since yesterday,
like so:

rcarter at feyerabend> firefox

(firefox:5486): GLib-GIO-CRITICAL **: 11:45:26.964: g_dbus_proxy_new: 
assertion 'G_IS_DBUS_CONNECTION (connection)' failed

(firefox:5486): GLib-GIO-CRITICAL **: 11:45:26.965: g_dbus_proxy_new: 
assertion 'G_IS_DBUS_CONNECTION (connection)' failed

(firefox:5486): GLib-GIO-CRITICAL **: 11:45:26.965: g_dbus_proxy_new: 
assertion 'G_IS_DBUS_CONNECTION (connection)' failed
Exiting due to channel error.
Exiting due to channel error.
zsh: segmentation fault  firefox
rcarter at feyerabend>  thunderbird
rcarter at feyerabend>

Sometimes I'll get a window, that goes away immediately, mostly not.
I cleared the .mozilla .thunderbird profiles and it's not that.

I build ports via poudriere.

Thanks,
Russell