Every virtual or dedicated hosting machine has its own Os and operates independently from the hosting machines of other clients. Updating the Operating system is frequently neglected, but doing that could have quite a lot of advantages for your internet sites. The most significant reason to employ the latest version is that patches are typically released to repair security holes in the Operating System code, so if you do not install the updates, you risk people with harmful intentions to use these holes and to get access to your content. Operating system updates are also released for much better functionality of the system overall and for much better compatibility with the hardware available on the market, which can instantly influence the functionality of your sites. If the performance and the security of your scripts is the reason to update them, you could also know that their latest versions require an updated Operating System so as to function effectively, therefore keeping the OS up-to-date is always wise.