The battery issues are, oddly enough, specifically regarding idle use - the phone fails to disable wifi when going to sleep and sometimes interrupt handlers that run while the phone is asleep cause it to wake up and peg a core at 100% utilization, killing the battery.
The phone's battery usage while not asleep is actually quite good! And if you disable WiFi, it's less likely you'll hit the bug. But it still happens to me a few times a day, so I have to charge it daily even if I'm not using it - and that's frustrating.
I used wifi all day at work the past weeks without much problems, but I can understand your frustration if it suddenly eats up a lot of power. After 7 hours idling today my phone is at 81% battery now, but I have only been on the phone for like 20 minutes earlier today so "Android OS" and "Voice calls" have about 25 minutes of cpu usage each, while maps has 15% today for some reason.
My phone runs stock samsung android since I just got it:
Android 2.3.3 GINGERBREAD.XWKE2 Linux Kernel 2.6.35.7
I have a GS2 for the three weeks now and havent seen this issue.In fact, I think the battery life is a lot better then my last phone which was a IPhone 3GS. Is this a common bug?
The phone's battery usage while not asleep is actually quite good! And if you disable WiFi, it's less likely you'll hit the bug. But it still happens to me a few times a day, so I have to charge it daily even if I'm not using it - and that's frustrating.