Thanks for your fast reply.

We managed to get the gids correct now, after switching to ADS and back to internal LDAP.
Then we renamed users and created a new users group. But we needed to set the default group for any new user.

After all this we tried to import the uid mappings (which worked before) and restarted.
But now it is not possible to download neither the gid nor the (hopefully) changed uid mapping. When changing the imported file to utf-8 encoding it says "import failed".
Do you know the problem of defective mappings? There seems to be a connection between the gid and uid import function. And without the mapping the access to the shares does"nt work. The used version is: 6.0up80.8101.5626

Thanks in advance.

hftluh