Thanks to everyone for your contributions, it is truly and greatly appreciated. Considering our running build is a HP image (Update 1 build 623860). It appears the latest patches / build is update 2 (Update 2 build 914586). Could we just add the new HP ISO (U2 914586) to the ESXi Images in Updates Manager and run the upgrade, or should we apply the "VMware ESXi 5.0 Complete Update 2" from the Patch Repository?
Many thanks again.