Windows Vista, Firefox 19.0.2
Popup came up telling me I needed to update flash player plugin, it was "at risk" or something.
Downloaded, installed and it timed out at 47%.
Tried full uninstall and new install, still no dice.
Download and run the offline installer from http://helpx.adobe.com/flash-player/kb/installation-problems-flash-player-windows.html#mai n-pars_header
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