I have found that if you stop in your feed, the blade will burn the wood, too. Make sure your feed is a steady motion, not too fast and not too slow. And try NOT to stop. I have done this due to a piece binding between the fence and blade or the internal stress causing the wood to warp around the blade when it was being cut.
Some woods, like cherry, are notorious for burning when cut. Make sure your blade is new or sharp and appropriate for the cut. (e.g. Don't use a 24 tooth rip blade for crosscuts.) If you have ot force the cut, something is wrong!
But, I beleive that the general concensus is that burniong occurs mostly from the fence not being parallel to the blade. So, that would be the first to check.