Comfortably sitting on a 15+ hours Air Canada flight between Vancouver, Canada and Sydney, Australia, I was looking forward to experiencing my MacBook Air for a longer period of time. Good news, I got plenty of battery time (above 5 hours) with normal usage and with all wireless disabled.
But after 5+ hours of usage, I needed to recharge the battery. Good news, there was a 110V power plug in the seat, so I connect my power adapter. And then, I get a huge surprise… the multi-touch trackpad starts behaving in a very strange way… the cursor starts jumping across the screen, when in the finder, the desktop icons change sizes… and as soon as I disconnect the power, everything is back to normal. I was therefore able to watch a movie on the Air, but every time I needed to move the cursor, I had to disconnect the power cord first???
I will try this again on my flight back, and if the problem is still there, I will report the details to Apple. It sounds really strange that a sub-notebook designed for road-warriors could have problems when used in a typical scenario for the target audience.