Hello!
I don't know whether this bug has been mentioned (or solved), but I have very unpleasant problems in fullscreen mode. When I browse images in fullscreen mode, the fragments of previous images display in the empty spaces (background).
I use XnView 1.91.3 (small). My fullscreen options are:
+hide scrollbar
+hide play bar
+show information
*fit image to window, large only
-use delayed high quality...
IMHO this is forgotten refresh procedure)) but it is REALLY ANNOYING

I have uploaded some screenshots:
http://slil.ru/24747778
http://slil.ru/24747798
Thanks in advance!