LG Fusic / LX-550

I've been having this problem with the Fusic since I first purchased it in April 2007. It has gotten to the point that whenever I close the phone, it'll power itself off. I have to close it very gingerly to keep it from doing so. I plan to call Sprint and request a different model phone as a replacement. This has happened to me on three separate occasions with three separate handsets. It has to be a flaw in the manufacturing.