i had the same dilema as you to downgrade to 4.0.4...
I noticed today that the phone drains 4 to 8 % battery in standby mode over the night.. i havent noticed something like this in 4.0.4 .
I think the battery management was better.
Anyway i will follow your suggestion to wait a few days to level the situation .
I updated with mac bridge . What is the best method if i decide to downgrade ?
I need a clean install method
.Format everything and clean install the rom i decide to install.
Also does the repair option in pc companion or bridge does a clean install;