Each and every virtual or dedicated server has its own Operating System and works independently from the hosting machines of other clients. Updating the Operating system is frequently neglected, but doing that may have lots of advantages for your sites. The most essential reason to employ the latest version is that patches are usually released to fix security holes inside 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. OS updates are also released for improved functionality of the system in general and for far better compatibility with the hardware on the market, which can directly affect the functionality of your websites. If the functionality and the security of your scripts is the reason to update them, you may also discover that their most up-to-date versions require an updated Operating System to be able to work properly, consequently keeping the Operating system up-to-date is always wise.