Today we have a number of staff with ekrn.exe using 100% CPU and slowing their computer down. Nod32 220.127.116.11 - Latest sig database is 5972. It appears that accessing Https websites with IE causes ekrn.exe to hog all CPU, so much so that you can't type in emails etc. After several seconds it comes right until you click on something in IE again. If you disable real-time protection your computer works correctly again (without any protection!). Could this be a signature issue?