Hi, just got my first mac. It is a ibook G4 1.2Ghz 14.1". 1) Battery estimates are not accurate I noticed doing a full charged in sleep mode gives me less battery power compared to charging it while still running programs. Strange. 2) Sometimes program quits suddenly. So far the programs that have quit on me are: Safari, IE, Netscape, 'Mac Help' in finder, Appleworks, Ms Office 3) sometimes it takes quite awhile for the applications to respond. 10 minutes ago I try searching some help in "Mac Help", I entered the phrase but nothing happens, then this rainbow wheel just pop up for many seconds and the program quits. Now i can't start Mac Help anymore. Overall, my ibook is not as fast or responsive as the first 2 days I bought it, which was May 20th 2004. But of course i am still very new to this OS since I have been a PC user all my life. Hope to find my way around to this problems...... And would appreciate any help from fellow users! Thanks!