LOL @ the drawn Apple logo

Thanks for the tip. As it happens, my father took the AC adapter away last night. He's an electronics technician and knows a lot more about all of this than I do (but knows zip about Macs). While I've had it plugged into the wall the past few days, it's felt warm but it was always like that. I think my last adapter was like that too. Anyway, he thinks it's overheating so he insisted I stop using it until he runs some tests.