Awaiting the Backport.

My Machine has just frozen at exactly : 19h46. (I was working on Firefox, while Chromium open)
after rebooting here is the output of the System log file: 


May 18 19:40:51 L502X dhclient: bound to 192.168.51.10 -- renewal in 128 seconds.
May 18 19:42:00 L502X kernel: [12956.377297] type=1400 audit(1337362920.367:85): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/etc/udev/udev.conf" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:00 L502X kernel: [12956.395868] type=1400 audit(1337362920.383:86): apparmor="DENIED" operation="exec" parent=1699 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/usr/bin/lsb_release" pid=1700 comm="sh" requested_mask="x" denied_mask="x" fsuid=1000 ouid=0
May 18 19:42:00 L502X kernel: [12956.435174] type=1400 audit(1337362920.423:87): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:00 L502X kernel: [12956.503071] type=1400 audit(1337362920.491:88): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:00 L502X kernel: [12956.504718] type=1400 audit(1337362920.495:89): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:00 L502X kernel: [12956.504904] type=1400 audit(1337362920.495:90): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:02 L502X kernel: [12958.489950] type=1400 audit(1337362922.483:91): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:02 L502X kernel: [12958.490022] type=1400 audit(1337362922.483:92): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:02 L502X kernel: [12958.490430] type=1400 audit(1337362922.483:93): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/video0" pid=1695 comm="GoogleTalkPlugi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 18 19:42:59 L502X dhclient: DHCPREQUEST of 192.168.51.10 on eth0 to 192.168.51.254 port 67
May 18 19:42:59 L502X dhclient: DHCPACK of 192.168.51.10 from 192.168.51.254
May 18 19:42:59 L502X dhclient: bound to 192.168.51.10 -- renewal in 136 seconds.
May 18 19:45:01 L502X CRON[1892]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
May 18 19:45:15 L502X dhclient: DHCPREQUEST of 192.168.51.10 on eth0 to 192.168.51.254 port 67
May 18 19:45:15 L502X dhclient: DHCPACK of 192.168.51.10 from 192.168.51.254
May 18 19:45:15 L502X dhclient: bound to 192.168.51.10 -- renewal in 130 seconds.
May 18 19:48:33 L502X kernel: imklog 5.8.6, log source = /proc/kmsg started.
May 18 19:48:33 L502X rsyslogd: [origin software="rsyslogd" swVersion="5.8.6" x-pid="1030" x-info="http://www.rsyslog.com"] start
etc....