Apple's Bluetooth Firmware Update 2.0 Fixes iPhone Tethering.
You may or may not have had issues with attempting to Tether your freshly installed iPhone 3.0 OS device to your Apple Laptop.
I did. My MacBook Air did not like Bluetooth tethering one bit.
I am happy to report that this has been addressed with the Bluetooth Firmware Update 2.0.
I should note that the update did not run on my late 2007 17” MacBook Pro - but it did not have any issues tethering to begin with. So if the update doesn’t run on your system you were probably fine to begin with.