[TrueSlacker0]

I just made the switch to ubuntu as my main os from windows. Firefox on windows never seemed to have any problems. Now I keep getting the same problem as your computer a. It doesnt happen every time, and i havent figured out the pattern. But clicking the x to close a tab does nothing, middle clicking the tab still closes it. Any time this problem starts I also have issues using the mouse middle button to scroll (on all apps, not just ff) Very, very annoying. Since these issues seem linked it seems bigger than just ff.