MacBook Pro does not charge battery
My MacBook Pro sometimes doesn't charge the battery. I plug the MagSafe and the light keep green, even if the battery is low. If I turn on the computer, I receive the note that the battery isn't being charged, however I can use the computer if it is plugged to eletricity. Sometimes the MagSafe backs to work as usual and I can give a full and normar charge to my battery.
The computer informs that the battery condition is "normal".
I use Mac OS X Snow Leopard version 10.6.8.
Mac Pro, Mac OS X (10.6.8)