I've been using my laptop here for a year now. I recently decided to install some monitoring and throttling software on it so that it'll stop lagging so badly in games when it's on batteries. Thing is, that now I've noticed that my 1.6GHz centrino doesn't go above 620Mhz when it's on batteries, even if I set it to maximum performance mode. As soon as I plug in the AC it shoots right up to 1.6Ghz. The software I'm using is called Notebook Hardware Control, and it's been working fine for me so far. I've turned off all the power-saving options in the BIOS and video card drivers, but it's not making a difference. Any ideas?