I just received my MBP two days ago. I'm planning to use it to replace my old desktop pc. I seldom take it out of my house (but sometimes of course, that's why i bought a MBP not an iMac) and I will keep it open all day long. The question is: For older MBP, I can simply remove the battery and use the adapter to power the machine. But with this battery sealed MBP, should I atatch / detatch the adapter every charging cycle or just plug the adapter all day long? BTW: I'm in Hong Kong now. I ordered my MBP from AOS HK on Oct 6 PM and received it on Oct 8 AM. Very impressive!