Adding a KVM, what should I be aware of?

[Dragoncrest]

	I'm looking at adding a new KVM switch in the coming weeks.  I'm also 
going to be installing Freebsd 5.0 on one of my new workstations.  Just 
wondering what I should be aware of before installing the system and 
putting it on the KVM.  I know some people have mentioned issues with that 
before, so I wanted to be ready and aware of any and all issues so I could 
nail them as they show up so I'm not ripping my hair out trying to solve 
issues relating to my KVM switch.  Thanks!