> I'm using a multi-desktop switcher for Windows (part of the M$ 
> PowerToys package), and the Squeak VM complains in its debug log 
> every time I switch desktops.

What exactly does it complain about?

> I think that all the switcher does is 
> to re-position the invisible windows so they don't show.
> 
> Perhaps there's an assumption somewhere that the Squeak window is 
> within the screen coordinates?

Not that I know of.

Cheers,
  - Andreas