I have never seen or heard of this running on a Mac. I also had a good look at Google and couldn't find this being an issue for Mac. Are you sure the trojan.maljava wasn't a false positive. This sounds like typical Norton scare tactics! I'm not sure of anything Robert. A box popped up during the scan and said computer was infected with that, and I clicked "repair" and it then marked it "deleted". Nortons own site does not list this trojan effecting Mac OS. Trojan.Maljava | Symantec Are you running Boot Camp, VMWare or Parallels to run Windows on your Mac? None of the above. I have no Windows anything on the Mac. One thing you might want to do is turn on your Mac firewall, that will kill off the port scans etc, I did turn the Norton Firewall back on soon as the scan was done. Mac OS X 10.5 Help: Protecting your computer with a firewall