Sometimes it seems as if just as you're finally getting the hang of your car seat installation, the guidelines change again. Here's the newest recommendation: A proposed new rule says that the safest bet  for older and heavier kids is to stop using lower LATCH  (Lower Anchors and Tethers for Children) anchors with your car seat .
Read more here- http://www.ivillage.com/new-car-seat-safety-rules-using-latch/6-a-544640 
Are you using the LATCH system with your children? Will you need to make some adjustments with these new proposed rules?