It is normal. Everyone who rides Campy knows it well. I like it. I live in NYc and it makes pedestrians take note. It also reminds me to get back on the hammer unless the wind is rushing in my ears so loudly that I can't hear it.

Powerglide, I can't imagine why anyone would make a big deal about it, to be frank. It's just a clicking noise. I think she needs to get her anxiety disorder checked out.