Never ever opt in.
I never ever ever opt in to these things. I don't trust them.
Ever worried that software phoning home application performance data so vendors can learn from real-world users might become an attack vector? If so, your nightmare just came true: VMware's vCenter has just that problem, thanks to its use of the Adobe-derived open source BlazeDS messaging tool to process messages. VMware's …
Time and time again, vendors (software, hardware & scientific equipment) try to push a phone home or we dial into our network when they want system and seem very surprised when we're not keen. Maybe events like this will explain to them why companies like mine regard it as a Very Bad Idea™
Simon, I don't know why you think it's a good idea to keep your ESXi patches up to date. Doing exactly that will cause you nothing but heartache, as your beloved VMware lets you down almost every time.
Frankly, that's some bad advice, bro. I know why you say it. I would agree with regards to most other vendors, but VMware has a special knack for somehow messing up their updates.