it looks like that....:
server1:~# ls -lach /var/www/web4/web/
drwxrwxrwx 18 web4_admin web4 4,0K 2007-02-13 23:48 .
drwxr-xr-x 8 web4_admin web4 4,0K 2007-02-13 23:46 ..
-rw-r--r-- 1 root root 74M 2007-02-13 23:49 70MB.img
drwxrwxrwx 9 web4_admin web4 4,0K 2007-02-07 02:13 administrator
drwxrwxrwx 2 web4_admin web4 4,0K 2007-02-14 04:01 awstats
drwxrwxrwx 2 web4_admin web4 4,0K 2007-02-07 02:13 cache
I created the 70MB file with dd with the root account so that my web account was filled up to 95 MB or something like that ... and than I started to upload a 10MB file via FTP and I used the web4 account - the owner of the webspace.
But thanks for your response - I understand my mistake now ... I'll test it again and I'll only use the web4 account and FTP for it ;-)
with friendly greetings,