I am experiencing incredible battery life with 3.1.1 - I've gone over the 40 hour mark (original, stock battery) and I'm still at 60%. Granted, this hasn't been the most active two days on my OG Droid, but I have made calls and texts, recieved and checked emails, listened to music and browsed the internet a little bit. I would say my usage was light to moderate. I'm running the stock kernal: 800-250, on demand, no profiles. No theme installed. Messaging and home are not locked into memory. Recently applied Pete Alfonso's recommended AutoKiller Memory Optimizer settings at the following levels: 6, 10, 20, 24, 28, 28. A big thanks to the Black Droid and the rest of the Ultimate Droid team.