Alright, seems really as if I'm at the limits of my PC. Perhaps some moer RAM would improve the things? Though this has to wait until next month....
I'll start deleting things, though there is not much to delete which isn't in the camera view. Or could a new installation of Carrara help? I just don't want to give up this scene, that's my problem.Perhaps I'll reinstall Win XP too, it's over a year ago .....
Now I'm off drinking a beer, I'm far too upset about this whole issue.......

Thanks for your help!!!

Take care,

~Sassy~