s3: Yup. I think the GPS + Sygic combo kills the battery pretty pretty fast, also I had the backlight enabled all the time. It's mostly got to do with CPU usage, when it's idling the CPU is usually near to 0%. Now, if we could get the CPU to just keep it's lower (maybe the 'titan' kernel).

To be honest, I don't understand the battery usage pattern of the 900 myself. I usually find it performs better once it drops a few percentage points. Like for example, it would drop from 95-85% pretty fast.

PS: Just discovered, the second smartreflex command (echo 1 > /sys/power/sr_vdd2_autocomp) does not work with PR 1.2, it still remains at 0, even if you enable it.