I just plugged another 1920x1080 to my previous monitor (1920x1080 as well) and it seems that I'm experiencing some slight lagging during multitasking apps (firefox, movies, photoshop etc). The Aero animations are not that smooth either. I have an extendible desktop spanning on both displays and they're both plugged in to a GTS250 1gb. Could it be that the GTS250 cannot handle these monitors or should I look into some driver tweaking ?