Although I'm another one who gets annoyed when I
don't get sore, I don't like to be crippled or incapacitated! I take glutamine daily. It not only helps with muscle repair, but also has been shown to give a boost to the respiratory immune system. I just add a scoop to my protein drink every morning.
Another thing that helps with lower body soreness aside from stretching, is to do 5-10 minutes of light cardio after a heavy leg workout. Walk, recumbent bike, elliptical...just keep moving. This isn't a "get your heart rate up " pace, but just keep the muscles moving and work out the lactic acid.
Keep at it- the soreness will go away! Then it's time to change things so you get sore again
Mel