hey K! I hate to say but there are lots of bugs and issues with the Kindle fire, if you still can, return it ... and just go with the Kindle 3G. Otherwise I have to say Amazon have been great at replacing mine .. I am on my 3rd ....
I bought it at an office supply store so am probbaly just cross my fingers. So far my only gripe with it is finding a WiFi network in the places I am stuck in - as in the polls yesterday, Chapel last night, etc. There were networks but password protected. I wish it had a way to use one of those thingys I have seen plugged into laptop to give it a network when there is none. It looks like a little pigtail usb.
My City Manager had the same problem with her laptop but with a twist. The police dept wifi had great signal on the street in front of the building she was working polls in BUT the signal did not go inside. She was able to get their password since she is the Boss, but through the walls, it did not go.
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