I´m sure I remember you posting before that DOM's aren't an indicator of muscle growth and strength gain. I have however noticed that I do tend to get DOM's more in the body parts where I gain strength more easily. Also when I change my program I tend to get DOM's and gain strength. I tend to think that a really good work out is often followed up a day or two after with DOM's. Maybe not necessary but an indicator of good things(I know one can take many supplements and AAS and grow without DOMS)?
I had this discussion with a physio that actually thinks one should never get DOM's. I thought it was a very strange viewpoint. When one work's out, doesn't the muscle tissue get micro tears and inflammation and then grow back together stronger = muscle growth. That's why arachidonic might work, and NSAID's and anti oxidants are bad around workout.