So FireFox loads pages a bit faster. Big deal. IE is not more vulnerable - the user is. It sounds to me like FireFox was made for people without internet common sense. I never get spyware or adware because I know what I'm doing and where I'm going. If a user doesn't understand how to use the internet safely, then yes, they should get FireFox.
As for the clicking sound, that can easily be disabled or changed to something else in the sound settings.
As for the clicking sound, that can easily be disabled or changed to something else in the sound settings.