Lateley I have been using my AAO to listen to OTR radio in the evenings. After a few hours the unit gets EXTREMELY HOT! I mean very hot to the touch! Yesterday after about four hours it shut itself off. :o Do I have a defective unit, a fan problem - or is this normal for laptops? This is my first laptop as I have always owned desktops. BTW this happens using the electrical outlet since obviously the battery would never even last as long as three hours. Thanks for any information you can give me.