All is not well for Apple, in a week when it should be flag waving the release of Mac OS X 10.5 'Leopard' the firm finds itself, and its users, under attack instead. The culprit being a new Trojan which, once installed, changes the Mac's domain name system server. This kind of DNSChanger Trojan is nearly always criminally motivated, and that would certainly seem to be so in this case, which of course means that the people behind it calculated the potential profit was valuable enough to develop the malware.
That has to be a worry for Mac users.