Just upgraded my iPhone to 3.0 B2 and it seems to be much more reliable than before, syncs no longer take a long time, youtube worked after an update from 2.2.1, network submenu works in setting and everything doesn't lag as much. However, I have found some new ones. First issue: if my iphone is on the iphone 3g dock, if I attach external speakers to the line out conector, the iPhone will still play music through its speaker, instead of using the external speakers. Workaround: Plug the external speaker cable in the headphone port. Second issue: When using iPod, if I click on the home button to exit and do something else music stops playing. As we all now, music should stay playing on the backgroung, Is this happening to you also?