I got a mail from a Technize reader asking me about his problem. The problem was that every time he enabled the quick launch toolbar and then restarted the system, the toolbar had gone and had to be re=enabled again.
Actually when Windows shuts down, it saves all the settings in the user profile including the desktop settings, icon placements and taskbar settings. All these instructions are saved in the Windows registry. If, for some reason, the registry setting changes, Windows will not save the settings while logging off or shutting down. Make sure the following registry keys are OK.