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get this msg on FFx start: Script: chrome://stumbleupon/content/stumbleuponOverlay.js:19798

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OS-Win7 get this msg and FFx hangs--the option if to stop script or let it work thru--stop script option is only one that allows to FFx to load--msg is:Script: chrome://stumbleupon/content/stumbleuponOverlay.js:19798 What can we do?

OS-Win7 get this msg and FFx hangs--the option if to stop script or let it work thru--stop script option is only one that allows to FFx to load--msg is:Script: chrome://stumbleupon/content/stumbleuponOverlay.js:19798 What can we do?

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followed t-shooting guide--nada--removed Stumbleupon--problem solved. Solution is severe, however didn't use Stumble. Tnx--hope a better fix is in the wings.