I can get a full day, connected to the net all day (albeit through wifi with touches of 3G when I am outta range).

As I dont know your particular setup this could be tough however I do have a penchant for battery life extension.

This is a radical approach but can you give me the powertop output from about 3 minutes after a fresh reboot? I want you to ONLY load xterm, start powertop then quickly press the screen lock key and leave it for 41 seconds. Do this with wifi disconnected and on 2G mode.

The reason I ask for this is I am familiar with what the device should show when idiling with nothing.

From the above PT there are some bad things a-foot. The fact your CPU never reaches C4 sleep and you have over 15000 wakeups on the I2C bus means you phone is never going to sleep. This in turn is face r*ping your battery life.

Also I checked 'charging while turned off' on my phone last night and the CPU was also being used 50% so I wouldnt worry about that so much.