I have noticed very often, after starting Windows or even simply logging in to my user account, I will see the entire taskbar flash once or twice---all or some of the icons will go blank for a quick second or two, then be restored. This is not the blinking of a program that has loaded but does not have focus; there is no message or any program individually that is causing this--it can happen before I've started a particular program if I'm not mistaken. I did a search, but all the links that I looked at thought it was one of these instances that I've ruled out. It appears to me that Windows might be checking for updates, but after seeing this happen this morning, I checked and in the Settings Update section, it still had the last update check being the previous day. Does this happen with anyone else? Does anyone know what might be causing this? Given that this is only a couple of seconds this is not a major irritation--its just that I tried searching today and didn't think the search results were going to help me, so I got curious.