A new bunch of patches for ESX 3.5 and 3.0.x were posted this week from VMware. If you’re still in the old Virtual Infrastructure 3 world, you might want to look in to the latest patches as they contain security and critical updates.
Patch Download and Installation
See the VMware Update Manager Administration Guide for instructions on using Update Manager to download and install patches to automatically update ESX Server 3.5 hosts.
To update ESX Server 3.5 hosts when not using Update Manager, download the most recent patch bundle from https://www.vmware.com/download/vi/vi3_patches_35.html and install the bundle using esxupdate from the command line of the host. For more information, see the ESX Server 3 Patch Management Guide.