Last week I received my second ever mac and powerbook (see sig.). My first powerbook (titanium) arrived a bit more than 3 years ago with weird problem on the keyboard. The "0" key was extremely sensitive. All I had to do was rest my finger on it (without putting any pressure) and I'd get a hugely long row of 0's. Now 3 years later my new powerbook has exactly the same problem! Now the "L" key is extremely sensitive which is pretty annoying. The Ti was easy to fix. Called apple and they fedexed a new keyboard with 2 days. The keyboard of the new powerbook however isn't user-replaceable so that'll make the process more laborious. I already contacted my local apple store so it should be fixed soon. Strange and annoying coincidence though!