Recently I discovered a very annoying feature in Windows Mobile AKU 3, and I figured everyone here who has multiple devices or is used to using their devices in a certain unconverged way may be interested. In previous builds of Windows Mobile, the Microsoft Bluetooth Stack featured the Bluetooth Dialup Networking Profile. In AKU 3, this is gone, replaced with a new Internet Connection sharing program, and frustrations galore.
After contacting him, Werner "Menneisyys" Routsalainen
wrote up an article describing the situation in complete detail. Basically, if you're using a computer that can establish a Bluetooth Personal Area Network (PAN) connection and you don't mind pressing buttons on your phone everytime you want to establish a connection, then you'll be fine.
If you're using a conventional Pocket PC or device that uses Bluetooth Dialup Networking for an internet connection (or you just don't want to have to touch your device when establishing a connection through it), you'll be annoyed with this situation. Read Menneisyys' write up, and join me in asking nicely: Please Microsoft - put Bluetooth DUN back in! Keep the current nice features, just add DUN back in for those of us who know it works best for them!