I take a big image (e.g. 30 x 120 cm) - doubleclick it - XnView starts - displays the image, fitted to maximum with e.g. "7% Zoom" - press the icon "Zoom -" - some seconds happens nothing - then in the status bar appears "Zoom 524328 % - crash ...

This happens in office, at home I have no problems. It jumps from 9% to 7%, and then it stays without problems.
What happens here?
Peter