I've had a k610i for the past year all working fine but suddenly the battery now only lasts 5 hours and thats whilst on standby ! It should be lasting approx 15 hours on standby ... i've tried a spare battery from a w810i (battery works fine in the w810i - lasts for days) but once in my k610i it lasts just 5 hours. At this stage i figured it must be a softare issue so i decided to flash the phone to a w660. Flash all went well but i've still got the same problem with the battery lasting 5 hours. So im now stuck for ideas, what could be causing the battery to drain so quickly ? I've tried another battery and i've tried reflashing but no difference ... any ideas ?