I have been trying linux 3.16 with the packet0 patch and after some testing I
haven't got any Packet0 message in the dmesg log. So I guess it must be related
to the 3.17 rc's. I don't remember getting similar crashes just by watching
youtube videos in firefox with previous kernels.

I will try to build 3.17 rc6 (which was the version that gave the Packet0 logs
and system hangs) with the Packet 0 patch and report back.

@Alexandre: Can you try linux 3.16 and see if it works properly for you?