Insufficient priviledge ls -la o

total 1100
drwxrwsrwx 17 case users   4096 2008-11-23 10:57 .
drwxrwx---  4 root users   4096 2008-11-23 10:58 ..
drwxrwsrwx  4 case users   4096 2002-01-21 14:58 File1
drwxrwsrwx  2 case users   4096 2002-01-21 14:58 File2
drwxrwsrwx  7 case users   4096 2002-01-21 14:58 Dir0
drwxrwxrwx 49 root users   4096 2002-01-21 14:58 Dir00
-rwxrwxrwx  1 case users     24 2007-01-11 15:30 File3
drwxrwsrwx  3 case users   4096 2007-01-12 10:42 Dir1
drwxrwsrwx  3 case users   4096 2002-01-21 15:12 Dir2
drwxrwsrwx  2 case users   4096 2002-01-21 15:12 Dir3
drwxrwsrwx  3 case users   4096 2007-01-11 15:43 File3
drwxrwsrwx  3 case users   4096 2007-10-03 15:21 File4
drwxrwsrwx 11 case users   4096 2002-01-21 15:12 Dir4
drwxrwsrwx  2 root users   4096 2008-11-19 13:48 Dir5
drwxrwsrwx  2 root users   4096 2008-11-19 13:48 Dir6
-rwxrwxrwx  1 case users   4219 2008-01-07 16:31 File5
drwxrwsrwx  5 case users   4096 2007-08-01 18:09 Dir7
-rwxrwxrwx  1 case users   1798 2008-03-11 12:13 File6
drwxrwsrwx 23 case users   4096 2002-01-21 15:35 Dir8
-rwxrwxrwx  1 case users     16 2007-12-27 10:02 File7
-rwxrwxrwx  1 case users   1827 2008-03-11 12:13 File8
-rwxrwxrwx  1 case users  84480 2006-06-07 13:49 File9
-rwxrwxrwx  1 case users 109056 2006-06-07 13:50 File10
-rwxrwxrwx  1 case users 109056 2006-06-07 13:51 File11
-rwxrwxrwx  1 case users 109056 2006-06-07 13:52 File12
-rwxrwxrwx  1 case users 109056 2006-06-07 13:55 File13
-rwxrwxrwx  1 case users 112128 2006-10-14 01:31 File14
-rwxrwxrwx  1 case users 112640 2006-10-12 18:37 File15
drwxrwsrwx  5 case users   4096 2002-01-21 15:36 Dir9
-rwxrwxrwx  1 case users  75776 1999-02-02 05:19 File16
-rwxrwxrwx  1 case users  77824 1999-07-26 08:44 File17
-rwxrwxrwx  1 case users  70144 1999-12-11 09:10 File18