The visibility of this window is a bug. Did you change video drivers or add
a multi-monitor setup, or some bit of utility software from Microsoft or
your video card vendor? I've seen this myself on pretty plain vanilla
machines, but it has been a good while, and I can't recall the
circumstances.
I didn't do anything really. I have it scheduled to run around 4am, and when
I logged into the machine this morning using Remote Desktop, that dialog was
there. It's running on a Win2003 server, if that makes a difference.
Thanks - I can't expplain it. Perhaps it became visible somehow because of
the overnight scheduled scan. I don't expect this issue to be with us once
we get another beta build, but I don't know when that might happen.