Betsy, believe me I understand your concerns, and truth to tell, I am pretty big on etiquette and decorum myself. However, may I respectfully point out that once again I think you have missed the point. If God is upset by the actions of our fellow worshippers, then that is a matter for Him to address with them Himself. It is not our place to be the arbiters of proper behavior during Mass; that is for the pastor of the parish in question to address. The reason I am rather strong about this is that I consider we are doing grave danger to our souls when we presume to know the inmost needs and motivations of another person. Better to avoid indulging our desire for order and say a quick ‘get thee behind me, Satan’ rather than make assumptions about others which can so easily lead to pride, thus endangering our eternal fate.
jmcrae, you make a good point about education. However, again I respectfully submit that this is not our place. There is too much peril to our souls involved in lecturing others for us to indulge the desire lightly. Setting a good example by our own behavior and suppressing our desire to admonish what is, after all, not a sin will remove this peril.