Hey guys. I have been a registered developer for the iPhone for a couple months now, and installed the beta of 3.0 (after much deliberation) on Thursday. It's actually rather stable, but one thing that's been happening (and I have yet to find anyone else having this problem) is that the phone stops making any system sounds (i.e. text sound, mail sound, music, unlocking and locking, sounds in apps). The only way I can seem to fix it is to power the phone off and on. This has happened about 6 times in the last 2 and a half days. Anyone else here experience this? Also, I never had such a problem with 2.0 so I know it's not a hardware problem. Thanks, and I hope this doesn't violate the non-disclosure agreement!!!