Each and every virtual or dedicated hosting server has its own Operating System and functions separately from the servers of other clients. Updating the OS is often overlooked, but doing that could have lots of advantages for your websites. The most important reason to use the latest version is that patches are frequently released to fix security holes in the Operating System code, so if you don't install the updates, you risk people with harmful intentions to use these holes and to get access to your content. OS updates are also released for enhanced efficiency of the system as a whole and for much better compatibility with the hardware on the market, which can directly affect the efficiency of your internet sites. If the functionality and the security of your scripts is the reason to update them, you may also discover that their newest versions require an updated Operating System to be able to function properly, therefore keeping the Operating system up-to-date is always a wise idea.