Still get Sandbox security error on ESRI services

So I still randomly get this message:

SecurityError: Error #2048: Security sandbox violation: http://gis01.wch-rcc.com/wch_map/index.swf cannot load data from http://services.arcgisonline.com/Arc...pServer?f=json.

and now this one:

SecurityError: Error #2048: Security sandbox violation: http://gis01.wch-rcc.com/wch_map/index.swf cannot load data from http://geocode.arcgis.com/arcgis/res...eServer?f=json.

Of course, I can remove the reference to the world imagery and that sandbox error will go away, but it appears as if the geocode one is scattered throughout the fv.

So, since it doesn't appear that anyone can figure out why "this" ESRI server denies us randomly, is there a "better" arcgis server/sampleserver out there that one can point to that is at least consistant (either allow or deny, not both depending on current phase of moon, tide direction, and whatever else seems to be causing this)?

R_