You would need a very-very special screensaver to catch that.its a dust on PC Monitor
its a dust on PC Monitor
Several people with the same set up have to disagree, it will be something local to you. You are going to have to go through the motions of disabling browser extensions, adjusting your browser settings, font sizes, zoom, graphics settings etc.Firefox 36.0.1 on Windows 7. I can reproduce the issue all the time (it's always present).
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