My Toshiba laptop running Windows XP has been crawling since yesterday, around the same time I got a message that my ESET Antivirus software would be expiring soon. (Not sure if there's any relation, but I thought I'd mention it.) CPU was at 100% largely due to ekrn.exe. I went ahead and renewed my license, got notified that there were updates to Windows that I needed to install, installed them, and I'm still having CPU-at-100% problems, this time due to egui.exe. Plus my ESET Antivirus program doesn't seem to recognize that I've renewed, despite my having entered the new user name and password multiple times. Help!