Obviously I know that you can't use Bluetooth to sync. But I was trying to connect my iPhone (with 3.0) to my Mac and it only paired after trying again and again. Then when I tried to actually connect it, the dot turns green and then immediately red. I've also tried this on my Windows 7 installation, not the same thing but that won't connect or pair. I thought it might be because I was trying to figure out how to do all the tethering stuff that it caused my Bluetooth not to act properly. But I did a full restore (basically completely new) and it's still acting this way. I'm not sure if this is a bug because I've never tried this in iPhone 2.0. Or the Bluetooth in my phone is breaking.