I recently started experiencing problems with the phone aspect of my iPhone.

This is the best way I can describe it:

I will receive a call and the screen will light up and show the incoming call. No ringtone will activate and no sound to advise me of a missed call.

I will check for emails or an incoming txt and wake the phone up to find what looks like an active call. It shows the caller ID and the red "end call" button will show. There is no active call, just whats left of a call I received minutes ago. If I try to call that person back I get no sound out of the earpiece or speaker phone. The call goes through but I can hear anything.

The only thing that remedies this is a respring through SBSsettings.

Not sure if it's a problem with Winterboard or SBS. The issue is not easily duplicated and appears to happen at random. I'll go hours without a problem and then I'll find a missed call that looks like it's still active.

I don't want to do a restore but I may have to.

Anybody out there have this problem or heard of it?