Why virtualization breaks monitoring systems

I like to know what's going on with the stuff I manage, so I'm a big proponent of heavily monitored infrastructures. I've written more code to monitor, manage, and track IT infrastructure components than I can remember. Folks still email me about plug-ins or code I wrote years ago and have since completely forgotten.Renee Zellweger Carson Palmer Michelle Wie Reese Witherspoon Bill O\\\\\\\\\\\\\\\'Reilly Kate Moss Diane Sawyer Sean (Diddy) Combs John Grisham Rachael Ray