This rom has been the Smoothest ICS rom I have tried thus far, great work. I installed this rom 2 days ago, Had great battery then but now it just looks wrong.
Woke up today with the alarm clock app on the phone but the screen was black. Tried using the power button but nothing I can still hear it fine but couldn't do anything to get the screen to work again. I took a screen shot and hard rebooted the phone. then took another screen shot of the power menu.
The night before I had charged it and re-calibrated the battery before going to bed and after reboot it was at about %60. Most of the drain is from the OS.
Didn't install any custom kernels or themes, Didn't change any of the performance options.
The only odd setting that I tried was to change LED color to blue. I reverted that back to white and will let you know if it happens again.
Also the percentage battery text is on top of the battery logo. When charging, one of the digits is unreadable.
I occasionally see Spam/adds in the notification menu. I didn't install any apps I didn't have in other roms.
Tried the GPS briefly today and it worked but only got a maximum of 6-7 Satellite locks.
I hope this helps.