Hello guys, I've been lurking in the forums for quite some time. This weekend I made the big jump and bought a MBP 2.5Ghz from the previous generation for a great price: 1300. I am immensely happy with the switching and the computer itself. However I still have a couple of questions that weren't answered by the "search" function. I use the computer mostly at home running on AC power alone. I already know it underclocks the CPU, however so far the speed is great for casual use. Should I need to do any serious rendering, I just plug the battery back in. So first things first, can I insert and remove the battery while computer is in use? I have heard from users on the internet that this is okay, but haven't read anything from Apple about it. Secondly, if I understood the problems about the Nvidia 8600 correctly , they are caused by bad materials in conjunction with excessive temperatures. If the CPU is underclocked most of the time the temperature inside the machine remains lower correct? Wouldn't this help save "life expectancy", so to say? Also, when I put the computer in sleep mode and remove the AC power (remember, no battery in), apparently it shuts down after a couple of seconds, but when I plug it back in, it shows a little loading bar and then gets back to where I was... How is this possible? Is it advisable to do this, say if you have to move from one room to another? Bear with me if these are silly questions. I used PCs for way too much time Best regards, José C.