Reading all of your guys posts, it seems that 3 hrs is normal. However with my experience using my (June 07) MBP with tiger it got much more life out of its battery than with leopard, I have yet to find anyone to agree with me but, other problems with my MBP have been bothering me as well and none of them happened when tiger was installed. As far as the battery goes, using iStat, my current health rating is 69% but this changes every time I reboot or unplug it and let it drain for a while and then plug it back it, often going from the mid 60% range back to the high 70% range. With tiger installed my health was 95% and the battery meter was very accurate. This just seems weird to me. Also while my battery is draining it will register that I have around 50 min. left and about 30% charge left, and around this point every time it will completely die without warning. Then when I go to plug it back in it will register that is has about 55% to charge and it will take around an hour to charge to 98%. I had never experienced anything like this until the leopard install. My battery has been through 50 complete cycles since last june. I have never had anything like this on my previous Tibook's or previous macbook. Also with leopard have been having issues with the finder freezing, and my external drives not ejecting, and time machine constantly think that it is syncing my drive and it wont go to sleep, and a few of my apps from time to time will crash to where I have force-quit in which they do, but the light below the dock icon will remain, and again the computer will not reboot sleep or shut down while in this condition forcing me to push and hold the power button. I am running a 2.2 GHZ june 07 release of the macbook pro, if anyone else has experienced problems like this lemme know, if not maybe I just have a lemon or need to go back to tiger, I love my leopard apps but I am tired of doing this almost every other day and having to carry my power adapter with me to use my computer during class, when it used to last all day during classes while sleeping in between, I rarely shut it down usually leave it running. I have done numerous searches on forums and on apple and have been un able to find anyone with similar problems, I thought about calling apple and seeing if anyone has reported similar issues, but for the most part I have been just dealing with it because I don't know what else can be done, I do perform routine maintenance, and empty caches regularly with onyx as well. The performance of my MBP is still great though other than those quirks.