This article talks about potential problems Charles Miller has found in OSX for both the iPhone and the Mac. Basically looks as if Apple is being sloppy in a way the usually Microsoft is accused of. It's a shame if there are security problems on the iPhone. To me its even more of a shame that there are people out there who force use to be so careful, and basically paranoid. I miss the days when viruses were not a problem. No special security software was needed on your computer. It just makes me feel sad.
Hopefully you can backup your iPhone via iTunes? Maybe?
BTW, I'm still gonna get an iPhone.