Each and every virtual or dedicated server has its own Os and operates separately from the hosting servers of other clients. Updating the OS is often ignored, but doing that may have lots of benefits for your websites. The most significant reason to employ the latest version is that patches are usually released to repair security holes within the Os code, so if you don't install the updates, you risk people with malicious intentions to take advantage of these holes and to get access to your content. Operating system updates are also released for enhanced functionality of the system as a whole and for much better compatibility with the hardware on the market, which could immediately affect the performance of your internet sites. If the efficiency and the security of your scripts is the reason to update them, you may also discover that their newest versions require an updated Os so as to work properly, thus keeping the Operating system up-to-date is always wise.