@giprabu - As far as i understand, yes. The CG version shouldnt be lower than your current version. If both are 4, you should be able to do a full flash of the 3.4.3 sbf. But dont most roms suggest u start with nordic froyo? Why do you want to change that?
My battery is at 42% now. I charged to 100% last night. its been unplugged for about 19 hours.
Usage -
2-3 hours of voice call (had to talk a lot today)
1 hour on wifi.. during which downloaded Talking tom cat 1 and 2
2-3 hours of music
some taking down of notes to transfer few important points and data between 2 disconnected systems
3 outgoing and 12 incoming messages
some small amount of playing with the cats
thats all.
With my average everyday usage, i get around 1.5 days easily... and my use isnt something remarkable. Its very ordinary. Not what would qualify for a good smartphone user.
@aritra - official cm7.1 isnt in a stable state for Defy. I still its still basically a port and not developed on Defy. It will definitely have bugs... which will be pest-controlled with time.
Among the issues u mentioned.. i have faced 4.> a few times too, both with stock ROM and prev version of WIUI. To fix that, just switch off the screen using power button and switch it back on again.. It used to work for me. My current WIUI version uses proximity sensor even with incoming calls... i guess its the pocket sensor... even though its a feature, its quite annoying sometimes as if i hold the phone over the top, the screen would go off and come on only when i switch the holding place.. But the problem u mentioned didnt occur with this rom so far.. been using this one for one month now...