If the latch won't catch and keep the laptop closed, then that definitly is a servicable problem. It may be that the hinge attaching the screen to the laptop base is torqued a bit tight (heard of this problem before with 15" powerbooks). I'd take it in and have it repaired before the year waranty is up. I'd also recommend an extended waranty for a laptop, because a mobile computer has the chance to suffer a lot more problems than a stationary mac pro/imac/macmini.