Each and every virtual or dedicated hosting machine has its own Operating System and operates separately from the hosting servers of other clients. Updating the Operating system is usually overlooked, but doing that might have lots of advantages for your websites. The most essential reason to employ the latest version is that patches are typically released to fix security holes inside the Os code, so if you don't install the updates, you risk individuals with harmful intentions to exploit these holes and to get access to your content. Operating system updates are also released for enhanced performance of the system in general and for better compatibility with the hardware on the market, which could instantly affect the efficiency of your sites. If the performance and the security of your scripts is the reason to update them, you could also know that their most recent versions require an updated Operating System in order to operate properly, therefore keeping the OS up-to-date is always wise.