Hi, I have a problem which previously only occurred very infrequently, and was not that much of an irritation. However, since installing SP3, it happens every time I boot up. The taskbar will not respond to anything - the start button cannot be clicked, nor can anything in quick launch or systray. When programs are minimised I cannot click on their box in the taskbar. Tooltips do not appear over, for example, the clock or program icons. When I log off and back on again, the taskbar is fine... This is getting a bit tedious however! I am running XP pro with SP3. I look forward to your reply, lemonthins.