Arduino Mega ADk

The Mega 2560 ADK has some typical problems. This board is not as versatile as that of UNO.

Today I discovered a new problem. I am having Samsung Galaxy S and my wife Galaxy S2. I was using Galaxy S to do some application development on ADK. But surprisingly I found that at a point my mobile showed 100% charged and the App stopped responding. Is this a problem with Arduino or the Android or the hardware of the mobile.
My initial logic tells me that since the USB port of the mobile is also the charging port , and since the mobile automatically cuts of the power after 100% charged , I suppose it had done the same thing here.

does anybody else noticed this?

Hi. How did u connect your android phone to the arduino mega adk.I tried but the board LED does not turn up. Its working well with PC.
What i did is i used a usb joiner. The power cable from the arduino board goes to the usb joiner and from the usb joiner the phone's datacable goes to my phone.
Still nothing happens.Plz help me out.