So here goes, I charge my 3gs daily and when I go to bed take it upstairs with me. The phone is obviously not touched during the night. When I wake up and check emails etc the battery is at 80% or less. This then causes me to check the usage. Strange but it shows at least 1.5 hours usage every morning. How can it be when it hasn't been touched. So 20% or more battery loss and 1.5 hours of usage on a phone thats been on standby for 8 hours while I sleep. Very odd.