The UV coordinates for two sides weren't correct. I made a try at fixing them.
You certainly succeeded, it worked on my system as well. Looks pretty good even with the sloppy paint job.
In case you can't correct all my files - could you see what I did wrong? How hard is it to correct UV coordinates?
Thanks so much for your help.
Edit: Here's another attempt of a very simple house, the indented door and window are done with a bump map, the walls are one face each. More of a toy house than planned, but it's only my 2nd house. Next time I'll double the resolution for the texture, the default 1024 pixels by UV Mapper is horrible to work with in a painting program.