On ubuntu 10.4 amd64, changing font in preferences has no affect. I see a gtk warning in window
(<unknown>:28935): Gtk-CRITICAL **: _gtk_accel_group_detach: assertion `g_slist_find (accel_group->acceleratables, object) != NULL' failed
but changing font names, saving has no affect. closing + reopen, no change in font (change still in config file tho).
Worked when I did this on windows.