I don't believe that the problem has anything to do with which background tasks are running. If this was a factor, then simply loging off and then loging back in to windows would not cause all the icons to reappear and stay there. The issue is random (as to what icons are missing), and it only appears on startup, so I would suspect that it is caused by a timing issue during the period in which the apps and systray are loading. It's as if there is a race to load into the systray, and depending on how things pan out, some apps will fail to show up in the systray, although they are still running in the background. Disabling some services that load on startup does have an affect on the timing of apps and systray loading, and will sometimes appear to cure the problem, but only temporarily, and your icons will start misbehaving again not long after this has been tried. If anyone knows how to control the order in which these items load, then that may help to devise a solution that works. As far as I am aware, the order of apps and systray loading are controlled by where they appear in the registry, but not in any obvious, or configurable way, as much of this seems to be set when windows, and your apps, are installed. Needless to say, this is all just speculation, so it could be well off the track. If enough users post their experiences with this issue, then maybe there will be enough clues to produce more accurate speculation, which may eventually lead to a solution being found. So feel free to speculate some more :=).