That fix keeps hildon-desktop CPU usage low. Without it, on my N900 it stays at 4%-5%, reducing battery life from 1/3 to 2/3 (guestimate). Now, in order to achieve 5 days, you must do some sacrifices. In my case: I have only two desktop widgets: weather and calendar (only calendar on my default desktop) No python-based daemons (not sure if it helps) installed No customizations to N900 menus (except for flashlight) No 3G (GSM only configuration - blame this on my current plan) No cellular data transfer (blame it also on my messed up carrier) Just a few calls a day Just a few minutes of email, internet browsing, witter a day I'm not found on any of those "sacrifices", but I've just observed that was what makes the battery last longer. I just wish the N900 had a monster battery in order to keep it always connected and working for a long time.