linphonec: segmentation fault

[Gerard Robin <g.robin3@free.fr>]

Hello,
I encounter some problems with linphone 2.0.1-3 (sid)

1
linphonec
Friend EUGENIOhome <sip:.........> is Gone
--------------8<--------------------------
Ready
Warning: video is disabled in linphonec.
linphonec> Registration on sip:ekiga.net successful.
linphonec> call 5OO
segmentation fault

2
linphone starts fine but when I phone to a friend his phone rings
but I can't hear him and he can't hear me (no sound)  

linphone 1.5.1-1 worked fine in my box and therefore I reinstalled
linphone 1.5.1-1  but it did not work in sid.

lspci  | grep Au
00:14.2 Audio device: ATI Technologies Inc SB450 HDA Audio (rev 01)

Can someone help me to find a solution ?
tia

--
Gérard