Thanks for all the response, and to the mod builders out there thanks for some of the best gaming that can be found bar none. At present I am playing Ws3 cleighmoor which has a no kill objective that I can't keep playing because during the course of time some ai somewhere else in the game has died - previously I have played Ws2 home again- before that Ws1 north- Vfat 3 art of revenge- Vfat 1- Poets and Peasants- pearls and swine- Accountant 1and 2- Alberics curse- -and several more that I can't remember --- maybe not all those games had dead ai lying around but most of these had more that should be. In the beginning of the problem, in some of the games I didn't start to notice right away but just assumed that a bug caused other ai to kill the other, but now it is apparent that something is wrong. I will try uninstalling dark mod then reinstalling. Another thought just occurred to me; a few weeks back I suddenly started having frame rate problems with some newer games and frame rate seemed slow so I searched for solutions and made some changes that I can't remember, but now I wonder if that could affect this sort of thing? some of the settings that I may have changed were: enabling Multi-Core optimization in Advanced video settings Disable Soft Shadows Set Ambient rendering to "Faster" Set Object Detail to "Lowest" Lower resolution Using full screen