Front Suspension problems of the 2007 Mazda MAZDA6

2007 Mazda6 with "noise" in the front end, many people with same problem reporting online. The noise, a clunking, has been there since the car was new, but at 45k it became worse, where one could hear it constantly upon turning the wheel/braking. Like front end was falling off. Now the dealer says it is the rotating arms in the front and that it is not dangerous to drive it this way with the constant groaning while one turns the wheel. Also, online folks said they had thicker grease put into the steering column (which was extremely loose all the time). The dealer did put the grease in and now the steering is a little stiffer and better, but the noise in the front end continues. What began with a new car having a small "clunk" with the turn of the steering wheel, has become a full blown issue. People online all have repeated my exact complaint on this car. We all wonder, "is it really safe" to drive? warranties are of course gone, though power train warranty still in effect, (car not yet three years old, but exceeding mileage for warranty ) Mazda will not honor their power train warranty, even though' the rotating arms are connected to it. As with most people complaining online, Mazda replaced my brakes --I paid out 800 today and 250 for a rental car. Certainly, based on all of us consumers having the exact same complaint, something should be done to reel in Mazda to do what is right with these cars. (see online blogs for investigation). Thank you.