Firefox on Windows 7 SP1 64-bit. Since I installed 57.0 I've had two bluescreens. (It never happened on any previous version.) The second time I took a few notes: STOP: 0x0000007E Pointing at: atikmdag.sys It happens while using Firefox but the installation of 57.0 coincides with installing KB4048957 and flash_player_27_0_0_187. Anyone else?