asterisk users - Nov 2005 - re: problem with asterisk and SIP on same box with 1.2

hello all,
 having a little problem..
 asterisk and ser on the same box, SER on 5060 and asterisk on 5070.
SER is set up to forward everything to asterisk.

in 1.07 my sip.conf looked like this:

[general]
port = 5070                     ; Port to bind to
disallow=all                    ; Disallow all codecs
allow=ulaw
allow=alaw
allow=ilbc
allow=gsm
dtmfmode=rfc2833

context=myUsers
canreinvite=no
host=dynamic
insecure=no
nat=yes
qualify=1000

autocreatepeer=yes

and incoming SIP requests flowed to asterisk.

now, it's failing, silently, with nothing in the CLI (at vvvvv).
ngrep the sip packets show SER trying to forward the packets along and failing.

anyone have something similar or have any tips? do i need to add insecure?

thanks,
 yair