When you browse the Internet some unwanted plug-ins gets installed on your computer without your notice. These Plug-ins can harm your computer and give a irritating browsing experience. Thus, removing these Plug-ins is very important. Some Plug-ins cannot be installed when you do it from the Control panel, even if you try booting your system in Safe mode that doesn't work.
Some plug-ins which I came across are Shopper Pro , Web Internet Security & Youtube accelerator.
Shopper pro : This Plug-in just irritates you when you browse through the sites by displaying no.of Ads. This cannot be uninstalled control panel or Safe mode either.
Web Internet Security: This plug-in doesn't allow you to browse any website. Whenever you try to open any website it throws a 504 error. The error states " Website which you are browsing has technical difficulties....."
Youtube accelerator : This doesn't allow you to play some videos on Youtube.
These are the Plug-ins which I cam across , there might be many other Plug-ins which reduces Internet experience and cannot be uninstalled from the control panel.
I have used ADW Cleaner in order to completely remove these Plug-ins from my system which worked for me to a great extent.
Download the cleaner , scan for malware and remove 'em.
