This is really weird!  Yesterday I realized that my Droid would only ring the first time a different phone number called it.  The second or third time that same number called, the phone would not ring or vibrate.  I have now determined that it doesn't ring or vibrate for any phone call unless you clear the call log.  Is it supposed to do that with the new OS?  I would much rather maintain my call log for future reference.
				
			