I've run into an annoying issue with my ACS 5.2 install.I can no longer add directory groups in the AD settings, the ACS comes back with "The item you  are trying to delete is referenced by other items.You must remove all references to this item befo...

I'm running a cluster of ACS 5.1 doing 802.1x authentication against AD.We currently have four AD domains with trust relationships going around. After sorting out some DNS related issues it is all working as it should, except for one of them where ma...