Laptop refuses to recognize its battery anymore. Time to schedule a genius bar visit to get a new one. The last one the failed slowly started to get worse and worse until I only had a few minutes of life. This one was fine until a week ago when it would just refuse to work sometimes, and now just flashes at me saying it has failed and needs replacement. I only seem to get a 2 year lifespan out of batteries, but I do use them heavily.