Sure glad to know I'm not the only one with this problem. I thought it was because I used to spray starch my fabrics on the ironing board and then let them dry before I pressed them, thinking it was the starch that burned. But this last time while pressing some light colored fabrics, the stain pressed into the fabrics. Sure hope it comes out when I wash it. But I'm lucky enough on this particular project as the coloration won't be noticed as much.