Bug#797227: segfault - gst_memory_unmap, libgstreamer

[MLHPUB]

Hi,

Same issue here since two weeks after upgrading Iceweasel from 31 to 38.

vimeo URL crash also and many others as http://fr.vente-privee.com/

Distribution is Jessie stable.
Iceweasel is 38.2.1esr-1~deb8u1 0  after a security update this morning.

What I have tried without success :
- launching Iceweasel in safe-mode
- updating flashplugin-nonfree (11.2.202.508)
- replacing flashplugin-nonfree with Gnash
- removing all package of gstreamer 0.10

Maybe something to explain : I have 3 computer with Jessie.

1 computer without problem : fresh install last june without Debian 
Multimedia (Marillat).

2 computers with problem : old Jessie testing updated daily et became 
stable last june with Debian Multimedia.

For me, simple user, it is a mystery...

Maybe this explanation can help ?

Matthieu