When XnView isn't opened, if you load very large images (by doubleclicking them in the Windows Explorer), the Interface gets opened too late IMO.
Wouldn't it be much better to have the interface opened first and then loading the image. This way I could see that XnView does something (progress/loading-bar).
At the moment it looks like nothing happens when opening large files (if xnview isn't opened already)

Here an example: http://www.outburst-audio.com/maik/artweaver-lzw.tif (6.2 MB)
-> close XnView
-> doubleclick the file to open it in XnView
=> XnView needs 5 seconds to show it and the interface itself
So in this example it would be much better to open the interface first and then begin with loading the image!