Just moved into a newly purchased home that had a Frigidaire microwave #PLMBZ209GCA manf. date March 2009. I put a little dish of butter in for 30 seconds on power level 7 with a paper towel over it to avoid splatter. After 20 seconds I look in to find the paper towel in flames. After carrying the paper towel to sink I look in the microwave to see the butter hadn't even melted. This house was in impecable condition inside and out, so I'm assuming the microwave was not abused prior to our purchase. read full review »