Several readers, as well as members from Apple discussion forum, reported to have experienced a significant decrease of the battery lifetime for their MacBook when running Leopard. Among our team members we did not experience such phenomenon. Hereafter is a compilation of information we collected about this issue: - The problem could be linked to faulty batteries, and Leopard battery power management firmware might simply speed up their "death". - According to MacFixit, one can perform the following procedure and should expect to recover part of their original battery lifetime: * Zap the PRAM * Reset the PMU (including entire switch off of the computer, removing the battery, then pressing the power button at least 10 seconds before installing it back) * Delete the file com.apple.PowerManagement.plist located in /Library/Preferences/SystemConfiguration/ before rebooting. * Check selected options in Power Saving Tab of the preference panel. We keep collecting information, and we will publish an update as soon as we obtain additional tips. [translation by Linathael]

	Read more at Mac Bidouille
	www.hardmac.com/news/2007-12-03/#7507