You have a defective clutch disk. There are two schools of thought on the defective disks:

1. It's normal: my car sounds like a poorly-built piece of crap, but that's normal for a Honda.

2. My car sounds like a poorly built piece of crap; a new clutch disk will allow me to enjoy ownership again.

I subscribe to the second line of thought: I replaced the disk at 35k miles when I couldn't stand the piss-poor build quality any longer. The car functioned, but sounded like crap. The "Honda apologists" who recite the company line that "there's nothing wrong, it's just a noise" would be all over GM if Solstices sounded like that after a relatively few miles.

10k miles later, the car still sounds reasonable.