Welp, I have Cyberfox, Skype, Process Hacker, Dropbox, Teamviewer, Rainmeter, AeroRainbow, RocketDock, and Puush running most of the time along with the Mail app. I sometimes watch movies or something in Media Center or Media Player and watch stuff in the browser. So it would have to be one of them, but I would not know which. Either way, regardless of what is running, the blur shouldn't change. Why would it change in the taskbar and not the titlebars, etc because of the same application if that is the case? I gave you that debug log, shouldn't there be something in it?