After I installed Panther there was this new tab in Preferences called Hardware; I attached a screenshot of it. By default my L2 cache was set to "None", but I changed it to 512KB. Is this tab designed so that you can turn off the L2 cache in order to increase battery life? Anyone know it's purpose? Also, when I checked the "Show Control in Menu Bar", nothing shows up in the menu bar. I'm just wondering where this came from. Note: I also installed XCode and CHUD so it might have come from that. Any ideas?