I've got a EA90 SL rear wheel, and it has broken its second spoke in 3 months. Rear, drive side spoke, and they are breaking at the start of the treads at the nipple. The spokes are Sapim straight pull, with a head at the hub, and threads at the rim. I'm a 170 pound rider, very easy on wheels, and both the times the spokes broke while riding on a smooth road. It appears to be a fatigue failure, at a stress concentration at the start of the threading. Anyone else having these problems? In 3O years of cycling first time I've seen spokes fail at the threads.

Hopefully Easton will take care of this....I'll report the outcome