I’ve learned to live with this dialog box, however annoying it might be. I just push it to one side of the screen so that it’s practically invisible. It seems so much milder than the restart dialog box that one used to get with IE5 (I haven’t installed IE ever since so I am not sure if you still get the same) - once the browser was installed, it would simply say that the computer was being restarted, and ‘boom’ it would do so. At least there is a choice ‘restart later’ in this dialog box.