I use first-gen unibody 15 inch Macbook Pro. I rarely shutdown and leave it sleep. However, sleeping somehow drains battery quite much. For example, after one day of sleep, my battery goes from 100% to about 60%. My previous Santa Rosa macbook pro never did this. My current setting is sleep and hibernate. I checked it in SmartSleep. I don't think it's normal but I want to hear from you. Also, how should I approach Apple if I want to fix it? It's not something that can be reproduced during genius bar visit. Thanks.