[mikei]

I had the cracked case and got the same load of crap in the store about it being my fault. This is what I did.

Call customer service and nicely explain that you never dropped the phone, but have a hairline crack that seems to be getting bigger (in my case I had a 2nd crack that started to form which I also explained). Make sure you tell them...nicely...that you don't want to spend the $50 and that you think it should be covered under warrenty. What they told me was that unless there is water or obvious abuse they can cover it in warranty, however I had to agree to accept the $50 charge if they deem it abuse. They sent me to a local store (not the same one I went to 1st) and I got a brand new phone with no charge.