I run Windows in a Time Machine backed-up Virtual Machine (VMWare Fusion) on my
Mac. If I get infected, I can blow away the VM and restore from an earlier
point with very little disruption. And, to answer the next question, no, I don't
worry about my Mac getting infected. Maybe I will someday.

"sudo find / -name ".signature" -exec rm -f {} \; -print"

That seems like a lot of work to do in order to not print your signature. Does
this work on free email services that append 'em for you? Or just the ones that
allow sudo with no password? ;-)

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Peter Campbell
IT Director, Earthjustice
http://www.earthjustice.org
"Because the earth needs a good lawyer"

Website/Blog: http://techcafeteria.com
Twitter: http://twitter.com/peterscampbell