The shadows produced by fires (my house fireplace in particular) are "ringed". All other light sources in the house or otherwise seem fine.
and yes I have tried messing with the ini files and resetting the settings
[img]http://img38.imageshack.us/img38/4923/tesv2011120718542681.png[/img]
[media]http://www.youtube.com/watch?v=xUpgO8MpVE8[/media]

lucky i guess