I PURCHASED AN EVENFLO AURA TRADITIONS TRAVEL SYSTEM: SAFARI TREK FOR MY FOURTH CHILD AND ONLY BABY GIRL. THE SEAT SEEMED TO BE WORKING FINE, BUT AFTER A WHILE THE LATCHES DID NOT HOOK PROPERLY INTO THE BASE. I WOULD PULL UP ON THE SEAT, AND IT WOULD SEEM TO BE HOOKED. I WOULD START DRIVING AND A FEW MINUTES LATER I WOULD HEAR THIS POP! AS THE REAR LATCH FULLY ENGAGED. IT TOOK A WHILE TO FIGURE OUT WHAT WAS GOING ON, SINCE IT APPEARED TO WORK AND DID NOT. I WAS SHOPPING FOR A NEW SEAT WHEN IT GOT WORSE. THE WORST PART ABOUT THE REAR LATCH FAILURE WAS WHEN I WENT INTO A STORE, PLACING THE INFANT SEAT ON THE CHILD SEAT PART OF THE SHOPPING CART. THE REAR LATCH IS SUPPOSED TO HOOK THE SEAT TO THE CART FOR SAFETY. I TUGGED ON THE SEAT, AND IT APPEARED FASTENED. I DID ALL OF MY SHOPPING AND UPON EXITING THE STORE, TURNED THE CART AT A 30 OR 40 DEGREE TURN TOWARDS THE ROW WHERE I HAD PARKED MY VAN. THE INFANT SEAT FLIPPED OFF OF THE SHOPPING CART, THE REAR LATCH HAVING RELEASED OR FAILED, AND MY 15 WEEK OLD DAUGHTER HIT HER HEAD ON THE CEMENT SIDEWALK. THANK GOD SHE WAS BUCKLED IN, WITH THE CHEST PIECE AT NIPPLE HEIGHT WHERE I WAS TOLD IT SHOULD BE TO KEEP HER SAFE. SHE STILL BANGED HER HEAD, BUT AFTER A FULL EXAMINATION AT THE EMERGENCY ROOM INCLUDING A CT SCAN, SHE WAS FINE EXCEPT THE GOOSE EGG AND SCUFFS. I'VE TRIED TO CONTACT EVENFLO ABOUT THIS, AND THEY DON'T HAVE ANYTHING TO SAY IN RESPONSE. I MENTIONED IT TO A NEW FRIEND I HAD MADE WITH A 9 MONTH OLD DAUGHTER, AND SHE HAD T