As you probably already know, or are (unfortunately) experiencing, upgrading to iPhone OS 3.0 has brought more than just a bunch of new features to the iPhone. For some, it has meant the introduction of bugs, especially in the performance of their iPhone's Wi-Fi connectivity.

These issues have affected some owners of the new iPhone model, the 3GS, as well as the iPhone 3G and even the iPod touch. TUAW reports one possible reason and solution to this problem: Bluetooth. It seems that if you turn off Bluetooth, it could boost your Wi-Fi considerably. It has something to do with Bluetooth and Wi-Fi sharing the same antenna and the way Bluetooth is made active by iPhone OS 3.0.

So if you are having problems with Wi-Fi, try turning off Bluetooth and see what happens. Turn it off anyway, even if Wi-Fi seems okay to you. You may notice Wi-Fi becoming faster as a result.

Let's hope Apple comes out with a fix soon. Meanwhile, if you haven't upgraded to iPhone 3.0, you may want to wait for Apple to release a patch. Don’t let yourself become yet another guinea pig.