recently, I decided to clone the flash memory of my N800 to the internal card.

I created an ext3+swap partition, and I was obliged to remove easy debian 's image in order to free space.

What surprised me, is that battery life is much higher now, it's about 2 times (on idle). but sometimes, it feels that its getting empty faster ...

I'm not sure what caused the problem, but at some point,(before the cloning) I was so upset I removed all of the desktop widgets, and most of tray apps.

I would suggest, that if you have easy debian, try to disable it or rename the image.