> defense in depth / layered defense... would you recommend having a Linux > anti-malware?
No. All those only try to recognize known threats. When a threat is known, the security hole it exploits is also known, and the fix for it already exists as well, so updating your distribution to the latest security fixes is a better solution since it doesn't just protect you from those known threats but it also protects you from unknown threats using the same security holes. Stefan