i wasn't happy that this release had Auto backlight broken (is not working), but found this software over at XDA which works much better than windows mobile default auto backlight. It has work without bugs with juicy 3.9 and the wizard to set the dim and max light on any condition is excellent. auto backlight is broken in this 3.9 release but this is a quick fix.
http://forum.xda-developers.com/showthread.php?t=450318
also if you want the windows orb back it only takes a minute to get it back. if anyone needs help let me know