Weird behaviour today on my XP machine.

Roday I started up my slow but steady Win XP Pro SP2 laptop

All the application launch icons on my task bar have disappeared.

A config file I had recently created for an application has "disappeared".

The Internet Explorer short-cut has disappeared.

All (most?) applications still seem to be there.

I didn't delete anything in a drunken stupor. There were no error messages, as I recall, when I started the machine telling me that the XP had reverted to some previous configuration.

Any idea what has happened?

Clive