Firefox Check Your Plugins found "unknown plug-ins". My other plug-ins are up to date. To keep Firefox running safely and smoothly can the "unknowns" be safely uninstalled? How do I know if I need them? Where do they come from?

These are the Plug-ins in question;
Yahoo! activeX Plug-in Bridge Unknown plugin Research
Microsoft® DRM
DRM Netscape Network Object Unknown plugin Research
RealPlayer Version Plugin
12.0.1.666 Unknown plugin Research
RealPlayer(tm) HTML5VideoShim Plug-In (32-bit)
RealPlayer(tm) HTML5VideoShim Plug-In Unknown plugin Research
RealNetworks(tm) Chrome Background Extension Plug-In (32-bit)
RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In Unknown plugin Research
RealJukebox NS Plugin
RealJukebox Netscape Plugin
I cannot say with certainty any plugins known or unknown installed on my computer are problematic. My other plugins are up to date. "Unresponsive Scripts" comes up quite often. No particular website, Grooveshark and Centurylink more than any others. Are the two (Plug-ins and Scripts) related?

option discovered in preferences. Really this and any feature that moves deletes or edits a users data should as far as possible be OFF BY DEFAULT. It shouldn't by default and without the users specific say do this dangerous and unnecessary thing without even letting the user know what it's doing!!! And then cause me a few hours (as i'm new to mac) searching for the option so as to switch it off. If i hadn't noticed the status cage declaring that it was copying files then i might never have twigged that this insane thing was occurring. And if i hadn't of noticed i would have been left maintaining the contents of the folder i copied the files to, the folder which as far as i was informed and so believed was also the location of the music files i was playing. How does Apple justify this 'genius' piece of software non-design? Surely it will hurt no one if this was off by default for new users - overall at least i dare say it would cause a lot less distress in the future for the unsuspecting public at large. Thanks for the support.

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