"The Adobe Flash plugin has crashed" in Mozilla Firefox - A Solution for this Vexing Problem

The best solution that we have found for getting rid of the privacy-violating and intrusive The Adobe Flash plugin has crashed alerts, which by default appear everywhere 45 seconds after termination in Mozilla Firefox, is just to disable the plug-in hang detector pursuant to this tip from the MozillaZine Knowledge Base:

"Plugin hang detector

In Firefox 3.6.4 and above, a plugin hang detector determines when an out-of-process plugin or plugin script has stopped responding, so that Firefox can terminate the plugin. The time period that must pass before the plugin is assumed to be locked up is set in the preference dom.ipc.plugins.timeoutSecs (the default is 45 seconds in Firefox 3.6.6). [12] When Firefox terminates a plugin that is no longer responding, you will see the "plugin has crashed" error dialog shown above. To prevent Firefox from terminating plugins it considers non-responsive, set dom.ipc.plugins.timeoutSecs to -1 in about:config. This disables the plugin hang detector but does not disable OOPP or stop "plugin-container" from running; to do that, you must set the dom.ipc.plugins.enabled.* preferences to "false" (see above)." 

It is a scandal that such a faulty program as the Adobe Flash Player can be released to the public without serious criminally fraudulent consequences for the companies involved and the people who are the actors behind the scene, who actively have initiated an often-failing program that bombards users with alerts in what amounts to free advertising for the company when the faulty program "terminates".