Within the first five minutes of using my new MacBook I noticed an annoying bump on the trackpad. I thought I would get used to it or that it would go down, but it didn't. After being bugged by it for about a month I took it to the local Apple Store and after waiting for a long time at the Genius Bar I explained the problem and they fixed it right then, no questions asked. I've got a brand new, lump-free keyboard/trackpad. If the guys at your Apple Store are anything like mine, you might have some luck getting a replacement for that bumpy trackpad.