I've just read about the Mal/JavaJar-B malware that is apparently capable of attacking OS X computers via a security hole in Java. I've also heard a few people mention that it can also affect Linux computers, but only from perfunctory sources (the comments in the article, and a few passing references from Googling).
Is such malware a concern for Linux users, and should we be running anti-virus software?
(I know the second question has been addressed here before, but it seems to me that the route of infection of Mal/JavaJar-B is possible even for the paranoid user. If I understand correctly, a popular website was compromised, and anyone that merely visited this website was infected. Imagine if askubuntu.com was compromised!)