I had read previously that some people had left their MBA for a month without using it and able to resume it without any charge. Supposedly, this was due to the MBA consuming little battery when it sleep. This morning when I opened up my MBA since the last usage 2 weeks ago, I found that the system was not able to resume at all. Thinking that the battery had depleted, I connected it to a power supply and true enough the display came back to life. I had remembered that the battery life was left with about 80% before I put it to sleep 2 weeks ago. Therefore I was quite surprised to find that the MBA had been using the battery even when sleeping. Otherwise, what other reasons could've lead to the depleting of the battery over the 2 weeks? I noted that I had a web browser running flash in the background. Could that be the reason why the MBA's battery was used up so much until it got depleted?