I have a MacBook (2 GHz, 2GB RAM) OSX 10.6.2. The problem that I have with it is that I will not tell me when it is on reserve battery, so I shuts down with out me knowing. The computer has reported that the battery needs to be replaced soon, but I can't see how that would affect the battery notification. Also all of the energy preferences have been set back to default so there is nothing in the preferences that would be affecting this. Let me know what the problem is, thanks for all the help in advance.