I use Blackspears settings in Vista for NOD32 and I had all iexplorer modules under client compatibility set to high effciency and have quite a few web sites that will not load at all but most do. If I disable imon and go back to those web sites they will load with no problem. With XP I had no problems with high effciency in IE7. I have set iexplorer modules to higher compatibility to solve this problem and so far it has. Has anyone else had problems with this.