First off, I'm using a jailbroken 3GS running 3.0. For the last several weeks I've had a problem where periodically when I receive a call I won't be able to hear the other person on the line. The call says it's connected and the call timer begins. Usually, if I call back I can hear them just fine. The problem seems to only happen when I receive calls and it happens with about 25% of my incoming calls. Any clues? I've restarted the phone numerous times. Don't know what else to try. Want to avoided restoring and rejailbreaking until an official 3.1 jailbreak for windows is released.