Magnesium Stearate controversy

This one just came up from Dr. Mercola. He says Magnesium Stearate is not so good for you: it can coat your intestines and cut down on absorbtion of food and nutrients - but go look in your vitamin cupboard and look at the list of ingredients of the bottles there. Don't be too suprised if you find magnesium stearate in the list. Unfortunately I didn't notice any reference in Dr. Mercola's article, so I went hunting. Here is just one of the articles that was more explanatory but again - lacked decent references. Or this One.

Here is another article that addresses 'inactive ingredients' in generic drugs and the possible effects of these ingredients. Hmmm, the FDA and strange bedfellow again!

Please - if anyone has some well documented source for the detrimental effects of magnesium stearate, please let me know!