I belive this has been addressed very recently here http://redmine.pfsense.org/repositories/revision/1/27616d6eb0427490ebafd51fc5875eb2e8eaedb6
I applied the fix manually but it has caused webgui not to function completly, but its just a typo as you can see
line 541: if (!in_array(array_shift(preg_split('/\d/', $ifname)), $vfaces)) }
which should be
line 541: if (!in_array(array_shift(preg_split('/\d/', $ifname)), $vfaces)) {
Thanks