I have read all about spiking issues with settings like unwanted programs or Adv. Huer. I have a problem that seems to be a little different. ekern.exe is spiking CPU usage, usually anywhere from 20%-50% when opening and using an .exe file on a network share. All network scanning is disabled and there is no activity in the activity monitor when opening the program. The application is accounting software and there is also high CPU usage while running reports and just generally moving through menus. It uses no local files, everything is accessed over a network share. I don't understand why ekern.exe should be doing anything with network files when network is unchecked in real-time scanning options. I have also disabled all scanning period and it's still spiking CPU and slowing the program down. I originally had 4.437 installed and recently updated to 4.474. That actually fixed the problem for a couple of weeks but now it's back. Any ideas?