Each and every virtual or dedicated hosting server has its own Os and operates independently from the hosting servers of other customers. Updating the OS is frequently ignored, but doing that could have lots of advantages for your internet sites. The most essential reason to use the latest version is that patches are frequently released to fix security holes inside the Operating System code, so if you don't install the updates, you risk individuals with malicious intentions to use these holes and to gain access to your content. OS updates are also released for enhanced functionality of the system as a whole and for better compatibility with the hardware available on the market, which could instantly impact the performance of your sites. If the functionality and the security of your scripts is the reason to update them, you may also know that their most recent versions require an updated Operating System so as to operate properly, consequently keeping the Operating system up-to-date is always wise.