as i mentioned a few posts back the simple reg hack for the data connection disconect button fixed most of my batt drain problems its quick and easy

with any reg editor it goes like this

HKLM\ControlPanel\Phone\NewDWORD Value\
Value Name=Flags2
Value data= "Hexidecimal" 10

after this is done exit out of reg editor tap on EV at the top of the screen when the drop down box appears there will be a new option that says "Disconnect" tap on it and no more data transfer

this feature alone has added approx 3 hours of standby time to my batt life hope this helps