My friend who has a Mac helped me out. We noticed that Snow Leopard's hosts work with.
Those numbers at the beginning as opposed to at the end.
-air-talkie-walkie.ddlcorner.com CNAME 127.0.0.1
0-29.com CNAME 127.0.0.1
0-pdf.com CNAME 127.0.0.1
Perhaps the Mac hosts works with Macs before Snow Leopard? Maybe labeling that Snow Leopard Mac users (My version is 10.6.7) with the Linux hosts would help out future Snow Leopard users? I'm not sure about Lion, but I wouldn't
be surprised with how Macs are changing if it works that way with Lion as well. I hope that information helps you and future users.