Comment 4 for bug 1318403

I´m new on the community, so please be easy!
I adhere to this bug report, Ubuntu 14.04 LTS x64
Intel Core 2 duo, 2 GIgs Ram, 500gigs HDD. Laptop
Once I click on the firefox icon, the whole system hangs, sometimes so badly not even ctrl-alt-bcksp works, power button does nothing (the phyisical one) I have to unplug the computer and remove the battery.
Strangely, looking at system monitor, memory usage is around 50%, no swap file usage. The only thing that is heavily accessed is the HDD.