ekiga hangs on call termination attempt

[gene]

Binary package hint: ekiga

I have a sip account with voipcheap.com I used to use ekiga and linphone in the past. I had some problems with the both right after upgrade to karmic (could not register). I managed to solve this problem. Now I get another one. I started noticing it on my wife's laptop. And I get it on mine.
The problem is when trying to hang up a call ekiga hangs itself. The hangup button remains pressed and the program interface does not respond. Only killing -15 can remove it. I guess it does not necessarily apply to only my sip account. When trying to call and hang up to the neighbors on the LAN leads to the same issue

On my FreeBSD box (with probably different version of ekiga) I have never had it.

ProblemType: Bug
Architecture: i386
Date: Wed Jan 13 13:17:43 2010
DistroRelease: Ubuntu 9.10
Package: ekiga 3.2.5-1ubuntu1
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ekiga
Uname: Linux 2.6.32-rc5-custom i686

[gene (eugenios)]

starting the program by
"ekiga -d" does not give any debug info

[gene (eugenios)]

Here's the top output at the time of ekiga hang in the attachment.

[gene (eugenios)]

I ran ekiga with
$ekiga -d 4
This is more verbose. I attach the output of two sessions. Both resulted by ekiga freeze when trying to hang up a phone call.

[gene (eugenios)]

I deleted the previous attachment since it reveals too many sensible info (phone numbers, ip addresses etc) I will try to look at it myself

[gene (eugenios)]

Trimming the output of the "ekiga -d 4" command is uploaded. I could not understand the problem. It looks like ekiga tries to use some event sounds to hang up, it does not work maybe? The event sound files are where the are looked for. Do not get what the problem is. Messages don;t appear to be either warnings or errors