I'm afraid you've got the wrong end of the stick here - presumably from ignorance (and I don't mean that or any thing else in this post in a nasty way).
Linux doesn't suffer from many of the insecurities or vulnerabilities that Windows does, e.g. viruses. It's not perfect, but it's a whole lot better than windows.
To be quite honest, your message to SMT is misleading and lacking in any kind of knowledge/facts, and anyone with an ounce of linux knowledge will find it quite amusing.
It sounds to me like you have no knowledge of Linux and find it a scary thought, hence trying to put SMT off going with these boxes.
You might want to re-word it, and say that, in all honesty, you don't have the knowledge to support Linux on your network, and would rather avoid it. This is a perfectly legitimate stance to take - if SMT really want to go ahead with these laptops, then they'll have to offer you some way of getting up to speed with Linux.
I assume you're talking about the EEE PC or such like. I bought 3 a few weeks ago - I made a couple of small tweaks to the box (like setting a root (that's the administrator account) password, and removing the ability for the default user to login as root (sudo), then tweaking the wireless settings to auto-reconnect on resume), then handed it over to a student. I have no worries about doing that. None at all.
