Yes, we experienced the same a few seasons ago. This is the only wheelset we have seen that "featured" 1/8" steel balls in the hubs! From a surface area/load bearing perspective these are woefully under built. SRAM supported them righteously by replacing them with another set. A few weeks of riding and the replacements were toast. They replaced the replacements, with a model higher up their food chain. Again, failure struck. Finally they replaced this, the third set, with an aluminum rimmed Zipp wheelset with a different hub. This all occurred shortly after SRAM and Zipp merged, to put a time frame on it. The rider is three seasons down the road from his last replacement. All is well. It sounds like you just purchased these s30's recently. They haven't been made in a few years. Warranty applies only to the original owner. I have that sinking "uh-oh" feeling...