I just opened up System Preferences (after installing Xcode and Maya PLE 5.0), and saw the Hardware Preference Pane. It says: POWERPC 7450 v2.1 (tech 0) Clock Speed: 800 MHz L1 Cache: 32KB Inst, 32KB Data Bus Speed: 100 MHz L2 Cache: (dropdown menu) 256KB, or None AltiVec: Yes Power: (checkbox) (checked) Nap What is this preference pane? Where did it come from? What would happen should I uncheck Nap? Or select none for the L2 Cache, but I'm assuming that would just slow down my computer. Edit: I unchecked Nap. It made my computer a lot quicker. With it checked, iTunes too 5.97 seconds to open. With it unchecked, iTunes too 3.69 seconds to open. I'm guessing it's from Xcode, because my computer has been slow since I installed that, but I'm not sure.