Hi all. Brand new member and first post! So please be gentle! I have a aluminium unibody 13" Macbook bought in autumn 2008 so just over a year old. Feel a bit sad that my first post is about a problem as I love this little computer! Just recently I have noticed that I'm only getting 1 1/5 hours of battery life out of a full charge instead of the 3 1/2 to 4 hours I am used to. This seems a bit extreme. I was wondering whether this has been seen before. I haven't updated to Snow Leapord and have been keeping up with the official software updates as when OSX wants them. My usage has not changed, so am at a loss as to a possible explanation. Just hoping the battery is not fried as I don't need to be spending more money right now! Here is the battery details from the System Profiler: Charge Information: Charge remaining (mAh): 2543 Fully charged: No Charging: No Full charge capacity (mAh): 4184 Health Information: Cycle count: 77 Condition: Good Battery Installed: Yes Amperage (mA): -2565 Voltage (mV): 11302 (Right now showing 59 minutes at 60% charge. Unpluggesd at 100% showing 1.5 hours) Thanks for any advice or threads that deal with this issue!