I've also been suffering from this issue. The kernel here (http://people.canonical.com/~sforshee/lp1674838/) appears to have dealt with the system hang, happily viewing videos on Firefox now.
I've also been suffering from this issue. The kernel here (http:// people. canonical. com/~sforshee/ lp1674838/) appears to have dealt with the system hang, happily viewing videos on Firefox now.