[davidgelb]

Have you tried a hard reset? Have you installed anything, or did it do that straight out of the box?

That definitely doesn't sound normal. If it isn't due to any apps you installed, and if a hard reset doesn't fix it, I would take it back in to the Sprint store and have their tech take a look at it. If they can't fix it, they should order you a replacement. (Do you have insurance?)

Good luck! Let us know what you find out.

-David