First Solar (FSLR -7.7%) tumbles after receiving a downgrade to Negative from Positive from Avian, which claims the junction boxes accompanying First Solar's solar module installations are suffering from reliability issues. Avian, which smartly upgraded First Solar in May, notes the warranty on First Solar's modules lasts for 20 years. Solar stocks in general are selling off (TAN -1.9%) following a critical NYT column about Chinese production. TSL -3.5%. STP -3.5%.