It is important to note that all software has vulnerabilities and switching browsers in an attempt to protect against these highly publicized but currently limited attacks can inadvertently create some false sense of security.
A statement from Microsoft • Regarding a newfound push for users to switch in the wake of a security threat created by Internet Explorer, especially IE6. Germany and France have already said not to use Internet Explorer, and the drumbeat against the software is getting louder. It’s worth pointing out, by the way, that IE has a much slower bug-fixing cycle than its competitors, so this statement (outside of the general sense) is a load of hooey. Drop the zero, get with the hero. source