Sprint HTC Hero :: Hero On Sprint 2.1 & OTA Doesn't Ring On Incoming Phone Calls

I have read a couple of threads that touched on this ring issue, but was unable to find any that had a solution or work around.Since the 2.1 update and the OTA update, many times when an incoming call comes, the phone doesn't ring. If I happen to be in front of the phone, I can see the screen change showing an incoming call.If I am listening to Pandora Radio, when the phone rings, Pandora stops, but the phone never rings.If I am not near or looking at the phone this results in missing the call.If I shut off the phone and re-boot it appears to ring fine, but at some point later in the day or week it will quit ringing.I normally never turn off the phone. Should I start to re-boot every day?