Actually, it wasn't really a conscious decision on my part : I just forgot to regenerate the V5 config file when I moved to the new server.
I've just fixed it so it should be running fine again.
That being said, V5 is not maintained at all, so it's always better if you can give feedback to improve V6 !
If knowledge can create problems, it is not through ignorance that we can solve them. Si le savoir peut créer des problèmes, ce n'est pas l'ignorance qui les résoudra.
( Isaac Asimov )