well since everything seems to be slower it could be the ram. Try to increase (yes increase) the ram timing a little, or then decrease (yes, decrease) the ram speed.
Just because when u raise the FSB while oc'ing u are also making the ram work harder. And doing one of the above things will reduce the load that the ram has.
But since u only oc'd 200mhz I doubt it's the ram, but still worth checking out.