"Many such cases." In all seriousness though, it's very common. Security as a whole nowadays is a rather moot point in my humble opinion. Exploits generally won't affect the average user unless they're pants on head retarded and go to places or open things they shouldn't. That said...my work is having issues with that right now, so I guess the general population is that stupid. Either way: when my firefox stops updating, it's time for a new OS or pacman -Syu more often lol