Texture load problem

Hi. I posted this in the FSX scenery forum but think that this forum would be closer to my problem:I have upgraded my rig to a i7 2600k/p8p67 pro/gtx460 (superclocked)/8gb-1600CL8- ddr3 (2x4gb) overclocked to 4.5ghz. and am now getting a problem with my graphics performance. For instance, when i go to KSFO (FlightBeam addon airport), at first load everything appears except the buildigs then after about a second, they appear. If i go into the menu and then back to my flight the same thing happens. I have used all the same addons on my pre upgrade rig and this did not happen. I hope i am just missing something because right now i am worse off than before (exept for FPS etc.)Any suggestions?