Each and every virtual or dedicated hosting server has its own Operating System and works independently from the hosting servers of other customers. Updating the Operating system is usually overlooked, but doing that may have quite a lot of benefits for your internet sites. The most important reason to employ the most recent version is that patches are typically released to fix security holes within the Os code, so if you do not install the updates, you risk people with destructive intentions to exploit these holes and to access your content. Operating system updates are also released for improved functionality of the system as a whole and for better compatibility with the hardware on the market, which can directly impact the performance of your sites. If the performance and the security of your scripts is the reason to update them, you could also discover that their newest versions require an updated Operating System so as to work properly, thus keeping the OS up-to-date is always wise.