Sort of: a while back I put on a different stem that left the steering tube a bit lower than ideal. (The previous stem was slammed and the steering tube cut for that application.) So that may have added some stress. The LBS commented that the steering tube was a bit short for this stem. Also, I went down on the hammer ride last Saturday. It was a relatively benign fall as I had time to react to the bunch in front that went down. I veered off the road and fell in some dirt. I didn't think it was a big deal, but I did notice creaking after that incident, which turned out to be the steering tube issue.