Each virtual or dedicated hosting machine has its own Operating System and functions separately from the hosting machines of other clients. Updating the Operating system is often neglected, but doing that could have quite a lot of benefits for your internet sites. The most essential reason to use the newest version is that patches are usually released to fix security holes inside the Operating System code, so if you don't install the updates, you risk individuals with destructive intentions to use these holes and to gain access to your content. Operating system updates are also released for much better efficiency of the system as a whole and for much better compatibility with the hardware available on the market, which could directly influence the functionality of your websites. If the efficiency 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 to be able to work effectively, thus keeping the OS up-to-date is always wise.