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Full user review
"Clean Video Plug-in"
Easy to install. No error(s) and no problem(s) with this version 5 on the contrary to earlier versions with corrupted files and errors when installing. My PC does not start slower with SilverLight on it. You can uninstall SilverLight via Control Panel, Software.
There is no con.
Try it, you won't regret it on Windows 7 64-bit.