I've had my X for a week now. When I took it out of the box, the bottom row keys were extremely firm and difficult to press. After a week of gentle use, the Menu and Home keys (which appear to be one physical key on a rocker) jiggle slightly up and down. They still require a slightly firm press to activate, but I am worried about the up/down wobble becoming more pronounced as the phone is used more frequently. Has anyone else experienced this? Is this something I should contact CS about?