Yes, I bought a 2.5" strip die and when it came in the mail the blade was popped up. I could see a mark where the die was probably dropped and pushed the blade up. I got a replacement, but am careful with this die as it is large, and I can see where knocking it against something might cause this problem.
Does anyone notice that their blades are getting dull? How long/how much use does it take before a replacement is necessary?