I am new to posting on this forum but I really hope that someone out there can help me out. I have a 13" MacBook Pro, 2.53 GHz Core 2 Duo, 4GB 1067 MHz DDR3, running OSX 10.6.8. My problem is that when I unplug the laptop form the charger and run it on the battery, the computer becomes unresponsive to any commands at all. It basically really slows down to a crawl. Even when rebooting it will take 5-10 minutes or more to do so. The odd thing is, when it gets plugged back in while any of this is going on, within a minute or two it works perfectly. It has been in a mac authorized repair shop for 7 weeks and has had a new logic board and a new hard drive replaced. The battery was tested and charges fine, holds a charge when unplugged, and the system profile shows the battery at Normal.
I am at a loss as to what to do next. It has become impossible to use this laptop for my classes when it is unplugged. I am about ready to just go buy a new one, and call this one a goner.
I am hoping someone reading this can help with ideas on its problem. Help? Anyone?