[ Thanks to E5Rebel for this link. ]
It began, innocuously enough, with a minor upgrade to Firefox 4. Firefox 4.01 apparently dealt with a host of minor bugs, and so I allowed the system to install it without a thought. After all, had there been anything big, I reasoned, it would at least have been version 4.1; 4.01 was clear signal that the changes were minor and would not break anything.
Wrong.