Thanks for taking the time to answer. The user is oacs. I removed all the stuff and rebuild a new one and this time the permissions look right
drwxrwxr-x 8 oacs web 192 Sep 28 14:55 18/
drwxr-xr-x 4 oacs web 96 Sep 28 14:59 19/
So I can't tell any longer why the permissions were messed on the first run.
Regards
Friedrich