Screen saver - how sensetive?

I am considering specing an HD1000 for a client's theatre, primerly for the
screen saver functionality.  The client has an Imerge music server with a
onscreen menu, and I intend to use the HD1000 to prevent burn-in of this
menu onto the plasma.  My questions is, how sensetive is the screen saver to
motion?  Will it, for example, kick in if only the time counter is ticking
over (changing possibly 5% of the screen area), or would this change be
sufficient to keep the menu onscreen (and thus possibly do damage to the
plasma)?

I know that user education is the most important way to protect the screen,
but it would be very nice to offer the HD1000 as backup protection. (Plus
the client gets all the other great benefits that come with it, but it's the
screen saver aspect that I'm selling it on).

I noticed another post in the archive commenting once the saver is active,
it does not automatically go back to the source when there is a change in
the picture.  Is this still the case with the current firmware?

Many thanks for your help.

Cheers,
Hamish Guthrey

--
System Designer     Soundline Audio
[email protected]  021-618-431
Upper Level, Capital Gateway Centre
56 Thorndon Quay         Wellington
Ph 04-471-0542       Fx 04-471-0545