My I300 developed the blue glow at in February (I got it in December). Over March it got worse; the circular glow around the speaker grow to almost 3/8"! I finally took my phone into the local Sprint store, but they couldn't help because they are no longer a service store. So, today I was finally near the MA Sprint service store (in Brookline) and took my phone in on it's 4 month aniversary. They swapped it out for a "reconditioned" phone; it looks brand new; I'd not have know it was reconditioned had the box not said so.

So, I'm happy with the results, although I think the "white glow spots" on the right hand side of the phone are more prominent than on my old one.

Let me add that I didn't beam from one phone to the other; I figured it would take too long. I'm just hotsyncing it now to restore everything. I made sure to hard reset the old phone as I let go of it.