Polka Dotted Floor?

Well, here is what the kitchen floor looks like. See the spots? They appeared in the last coat of polyurethane. The flooring finishers came back and added another coat of poly in an attempt to cover the spots but it didn't work. So they came back and added another coat. The top coat was satin so after 3 coats of satin, the floor just looked dull and the spots were still visible (though not as bad as before the additional two coats). Next the finishers came back and sanded the floor back down to bare wood and started over. The stain worked out fine but the first coat of poly....we're seeing spots again. The last couple of weeks have been very frustrating - we've waited so long to have a functioning kitchen and now we can't go in there while the floor is being finished (and refinished). And to make matters worse, I have to leave the house during the day after they apply the finish to try to keep the dust down and because the fumes are overwhelming. Let's count the number of times I've had to leave the house: 1)first coat of stain 2)2nd coat of poly 3)third coat of poly 4)4th coat of poly 5)fifth coat of poly. Resand and start over 6) first coat of stain 7)1st coat of poly 8) 2nd coat of poly. The eighth time was today. The flooring contractor came out of the kitchen shaking his head--that can't be good. More spots and he doesn't have a clue why. The only thing he knows for sure is that he will have to sand down to bare wood...AGAIN...and start over...AGAIN. Great.