After ordered the powerbook last Saturday, the powerbook finally came to me this morning and I was so happy to bring it from post room to my room. When I put the pbook on my desk, I was amazed by the design of powerbook again(the first time was by the gallery of pbook in online store). It's like artwork. But the next experience was not good really. I pluged in AC adapter and set up the computer to get it work. Everything fine until my friend told me 'the screen is flashing'. I noticed then the screen was sometimes brighter, soemtime dimmer. My friend recognized that when his IBM book disconnected from AC current, the display would be dimmer. Then we checked the power supply schedule, and the result was quite strange. The power supply schedule was changing from AC supply to battry supply schedule every a few seconds and vice versa. And indeed the indicator on the power cable is sometimes red, sometime green. It seems the AC adapter may be fault. I then phone called three times the Apple custom service. They asked me to try many methods, including reset all defualt in open firmware mode, but none worked. The last guy told me to buy another AC adapter. Hearing this, I was a bit angry,' I just got this mac this morning, and you let me buy another AC adapter?' This technical support realized my inconvience and uncomfort then and after kept me on phone for about ten mins, he finally found a after-sale represent and switched me to her. The after-sale represent offered me either replacement of pbook or refund. I really love this mac, so picked replacement. Now I am waiting for TNT to call me to collect my pbook. Isn't my first day experience with Mac awful? Anyway the Apple custom service is OK, not too bad.