Thanks Josh
The camera just came from Germany but I will dig a little deeper to see if there's
a power saving feature enabled in the menu that might be prompting the camera
to go into an early sleep mode.
What I have sorted out, though, is that the resetting occurs much more quickly
when I am shooting straight down (on tripod) as opposed to normal viewpoint.
Perhaps, there is a shaky contact between body/lens and pointing down breaks the contact.
Mark
http://www.marktomalty.com