I had the same problem and found this site. However, after a couple of hours it crossed my mind that it possibly had something to do with the charger or battery. I notice a couple of days before that although plugged in it was not charging up at all. At that tiem I unplugged it from the wall socket and placed it somewhere else and it worked. This did not happen tonight I decided to remove the USB part of the charger from the plug and inserted the USB into my computer. The mobile phone started to charge. I hope this is all it is for others.
After the phone has nearly charged I will try putting the USB back into the plug and make sure it is fully fitted in and place it in the wall socket. If it does not work, maybe it will be the fuse in the plug.