Comment 22 for bug 1321623

Same experience here with Quiana 32 bit / MATE
Freeze happens randomly while running Firefox 33, or Chrome, Thunderbird
Neither keyboard neither mouse are usable, and Caps-lock and Scrool-lock leds kepp blinking
I guess that an upgrade of Firefox and/or ATI Radeon and/or Linux ATMEL kernel be in cause ...
(Indeed my LinixMint standard graphic driver suddenly lost the capability of recognizing the monitor, reducing video resolution to 1024x768, previously at 1920x1080 as per installation, so i've been contraint to install AMD driver for Radeon HD5450)

my sysinfo log is here http://pastebin.com/raw.php?i=Dcizsp7K