Each and every virtual or dedicated hosting server has its own Operating System and operates separately from the hosting machines of other clients. Updating the OS is often overlooked, but doing that may have quite a lot of advantages for your internet sites. The most important reason to employ the most recent version is that patches are frequently released to fix security holes within the Os code, so if you don't install the updates, you risk people with destructive intentions to take advantage of these holes and to access your content. OS updates are also released for enhanced functionality 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 sites. If the functionality and the security of your scripts is the reason to update them, you could also discover that their most up-to-date versions require an updated Os so as to operate effectively, thus keeping the OS up-to-date is always a wise idea.