Bug#769941: Not because of gstreamer

[Eugen Dedu]

I often start iceweasel as another user (with sux) and when I load gmail 
I have this error too:
** (iceweasel:17775): CRITICAL **: gst_app_src_set_size: assertion 
'GST_IS_APP_SRC (appsrc)' failed

However, iceweasel does not crash.  So I think the crash has nothing to 
do with the assertion failed.

I use libgstreamer-plugins-base1.0-0 1.4.4-2 (current unstable).

-- 
Eugen