Here is my generated default ini, for reference: http://olivier.gallen.mageos.com/Temp/xnview.ini
Here are my suggested changes:
- General>Read/Write: favorite formats for saving: GIF, JPEG, PNG, TIFF, BMP
(are PCX and EMF really that common for SAVING???)
- Browser>File List>Cache>Compression = Lossy- High Quality(JPEG)
(reduce DB size a lot, faster (Hard-Drive speed limited) without noticeable loss in quality, and I'm quite picky...

- View>Misc>Cache>Keep current image in cache = ON
- Default window size = 800X600 (instead of 640x480 with just 3 thumbnails and a smallish preview!)
Your turn...