>From a certain version of the GIT are ".git" folders of submodules 
>placed into folder ".git/modules" in the "master" module.

I no longer have any .git folders in any of the affected modules. 
One by one they are disappearing. Every time I resync a new module 
is affected. Something got corrupted and the proverbial hell is 
breaking loose here. :-)

I hate git!

Darrell