Skype bi-directional video call crashes X server (xserver, mesa, drm, kernel from git, r600g+glamor)

[Laszlo Kertesz]

Hello,
i have an issue with Skype lately (i compile mesa, kernel, drm, xserver 
from git periodically and i use a A8-6500 with its IGP with r600g and 
glamor).
It crashes the x server if i use bi directional video call. It seems to 
work in one-way video.
The x server restarts, but skype  continues to work for about half a 
minute more, including sending video.
One problem is that i dont see any errors in any logs, not dmesg or xorg 
log so i cant say which component is the culprit.

Now it seems that a similar issue existed in the past and it was related 
to some drivers that couldnt handle multiple xv instances (one for the 
received video, the other for the local video thumbnail). And there was 
a workaround of disabling the local video thumbnail which cant be done 
on the current Skype (4.3). The glamor xv reports 16 available ports though.

Is there any other way of diagnosing this error? Maybe i have some issue 
with the 32 bit driver installation?
Although i had no problems whatsoever (gaming on Steam, vdpau etc works 
well for example) other than this.