I've had 2 razer naga's so far (bought them both brand new) the first one only lasted just over a year before it died. Now my second one is about to die (keeps losing mouse movement while using it, like the last one..so I can tell it's dieing)..and I've only had it for about a year if not less. Is this normal? 60+ bucks for a mouse seems pretty hefty for only a years use. I have 2 battery-run mouses that have lasted for 5+ years or more....what gives..