Windows 2000 gets a blank button on the taskbar, clicking this button does NOT open it or allow any action, it does nothing. right click, left click, or whatever! the task manager does not appear to have any strange tasks running. Spybot will not remove it. Don't know why it appears or under what circumstances it appears. Used to reboot the PC to get rid of it, but it comes back after a while. Have since discovered that stopping explorer.exe in taskmanager processes tab then starting it again, start new task, explorer.exe brings, this action stops this blank button and the desktop comes back without the it on the taskbar. But like the reboot option it still comes back again after a while. ANY IDEAS anybody.