We successfully upgraded to the latest version of PHP and a number of other updates are currently running smoothly. We did have an issue with an updated version of our firewall last night, however, that has been resolved.
Currently we’re preparing the installation of an updated kernel. This should help us improve the performance a bit especially in high demanding loads where the proc is saturated.
There will be downtime due to the kernel updates. This will result in a few reboots which must be done to test and boot into the kernel. However, the downtime should not last more than 5 minutes each. The time at which these reboots occur are arbitrary.