Uh-oh - If you are running certain extensions with Firefox, you could be vulnerable to hacking. According to the story below, the vulnerablity comes into play in a wireless environment or if your wired router still has the default passwords.

Threat Level - Wired Blogs: "some of the most popular of those extensions have created a security hole so wide even a newbie AOL hacker could find it and millions of Firefox users are at risk of having their browsers hijacked."