Ive only had maybe 2 or three icons that have doen this, but there were a couple in the hidden icons try that ive noticed that have been gone and i have no idea why. im posting this now, because today my volume icon is gone. Why would that disappear? Ive tried going into notification area icons in control panel, volume control was set to, "show icon and notifications" and i believe thast the correct setting. i tried changing it to another selection and then changing it back, and it gave me the message "this notification icon is not currently active..it will be shown the next time it becomes active. wtf!