Each and every virtual or dedicated hosting machine has its own Os and functions independently from the hosting servers of other customers. Updating the OS is usually overlooked, but doing that may have a wide range of benefits for your internet sites. The most significant reason to employ the most up-to-date version is that patches are frequently released to fix security holes within the Operating System code, so if you don't install the updates, you risk people with malicious intentions to exploit these holes and to gain access to your content. Operating system updates are also released for enhanced functionality of the system in general and for better compatibility with the hardware available on the market, which could instantly impact the functionality of your sites. If the performance and the security of your scripts is the reason to update them, you may also discover that their latest versions require an updated Operating System so as to function properly, therefore keeping the Operating system up-to-date is always a wise idea.