Recent flew on a 777 and tried to use the powerport. I am not sure if it was a problem with the port or if there was not enough juice but I couldn't use the powerport while I was using the laptop. It was almost as if my laptop was drawing more than what the powerport can supply (from a capacitor) - power supply dropped regularly in less than a minute.

I thought that my Dell D600m drew more than 75W. But, I checked today and it needs only 65-70W. So, I am not sure where the problem is.

Has anyone else experienced this before? What could be a remedy?