I just pass on and keep an eye on my anti-virus programs (yes plural)

Haven't noticed any problems so far, or they are REALLY sneaky.

EDIT: Drunkie is right. With all the boasting of "virus-free" problems, hackers and virus designers took the challenge and put their foot down. Linux is one of the few programs that run fairly virus free, but even they get attacks from time to time. Even android phones get them. No system is safe, you just have to be careful and protect yo sh**.