My phone cant break a day without charging too , bud this fifteen hours are enought for me (with xp4000 no problem at all )

I don't know how to help
Only switch of wireless lan scanning , firmware updated right after unpack to PR1.1 .. you might download powertop from this site and check if CPU is underclocked automaticly or if some aplication not wakeing up too much,
with all switched of (only cell phone on) cpu run at 250Mhz and in C4 state

with three pages (no flashplayer video) playng mp3s , wifi, icq on
15% at 500Mhz 85% at 250MHz 60% C3 40% C4 state
applets with using net - RSS (~10 channels) default weather

most time spend on edge connection,brithnes at 3bars ,at night at one
mail updates are for 30 minutes only if wifi connection , rss feeds updates manual ,weather update 6hours

duno what else ...

Only first time i loaded it with mp3's , movies and images there was some time unusable becasuse of indexing (around 4000mp3 ) , which take half of battery ...