Symantec and Viruslist.com have write-ups on a new virus that infects iPods running Linux. According to Symantec infects anything in the /usr/lib with "mod.so" in the filename. It also displays a simple message letting you know you are infected (a nice screen shot of this on the Viruslist page). Kinda novel. :)

http://www.symantec.com/enterprise/security_response/writeup.jsp?docid=2007-040516-4947-99&tabid=2

http://www.viruslist.com/en/weblog?weblogid=208187356