I've got a Samsung Galaxy S (international version) that I've just upgraded to Android 2.2 (Froyo) and now the battery usage page in settings (Settings => About phone => Battery use) only ever reports the following items: Display, Cell standby, Phone idle & Voice calls.
Although I upgraded only a couple of days after having the phone, I'm sure that it originally showed usage of other things like apps & live wallpaper... It's kind of useless how it is now, any ideas on how I get it displaying all usage again?