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 ignored, but doing that could have lots of benefits for your websites. The most significant reason to use the newest version is that patches are typically released to deal with security holes within the Operating System code, so if you do not install the updates, you risk people with destructive intentions to exploit these holes and to access your content. OS updates are also released for enhanced functionality of the system as a whole and for better compatibility with the hardware on the market, which can immediately impact the efficiency of your websites. 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 Os so as to operate properly, therefore keeping the Operating system up-to-date is always wise.