hi , my n900 in consuming baterry very quickly , i've installed a widget to see the cpu usage and mem and it tells me the cpu its always at 100% and mem going from 105 - 165MB ,

how can i see whats useing the cpu so much and how can i see at what speed is set my cpu ( i've seen on post here before that it could set it self to 250mhz )anyway i'm a novice user and havent got many things installed.. anyway i havent got many apps running and took all my IM widgets from desktop , well this is weird.. one buys the phone for some inteded use and then u cant use it becouse u have no batery.. thanks for the answers