Hi, I was wondering if it's normal that the root directory / should be owned by “root”.
I get asked for my password every time I want to do something there (e.g. save a file, create a directory) and I don't remember this happening before (though this may just be my faulty memory). Here's the relevant terminal output:

MacBook:~ ago$ ls -lah /
total 37311
drwxr-xr-x@  35 root  staff   1,2K 22 Mar 12:34 .
drwxr-xr-x@  35 root  staff   1,2K 22 Mar 12:34 ..
-rw-rw-r--@   1 root  admin    21K 22 Mar 10:21 .DS_Store
drwx------    3 root  admin   102B 28 Feb  2008 .Spotlight-V100
d-wx-wx-wt    2 root  admin    68B 31 Ago  2009 .Trashes
-rw-r--r--@   1 ago   501      45K 23 Gen  2008 .VolumeIcon.icns
srwxrwxrwx    1 root  staff     0B 22 Mar 12:34 .dbfseventsd
----------    1 root  admin     0B 23 Giu  2009 .file
drwx------   27 root  admin   918B 22 Mar 10:55 .fseventsd
-rw-r--r--@   1 ago   admin    59B 30 Ott  2007 .hidden
-rw-------    1 root  wheel   320K 30 Nov 11:42 .hotfiles.btree
drwxr-xr-x@   2 root  wheel    68B 18 Mag  2009 .vol
drwxrwxr-x+ 276 root  admin   9,2K 19 Mar 18:28 Applications
drwxrwxr-x@  21 root  admin   714B 14 Nov 12:01 Developer
drwxrwxr-t+  74 root  admin   2,5K 18 Dic 22:14 Library
drwxr-xr-x@   2 root  wheel    68B 23 Giu  2009 Network
drwxr-xr-x    4 root  wheel   136B 13 Nov 17:49 System
drwxr-xr-x    6 root  admin   204B 31 Ago  2009 Users
drwxrwxrwt@   4 root  admin   136B 22 Mar 12:35 Volumes
drwxr-xr-x@  39 root  wheel   1,3K 13 Nov 17:44 bin
drwxrwxr-t@   2 root  admin    68B 23 Giu  2009 cores
dr-xr-xr-x    3 root  wheel   5,1K 17 Mar 11:29 dev
lrwxr-xr-x@   1 root  wheel    11B 31 Ago  2009 etc -> private/etc
dr-xr-xr-x    2 root  wheel     1B 17 Mar 11:30 home
drwxrwxrwt@   3 root  wheel   102B 31 Ago  2009 lost+found
-rw-r--r--@   1 root  wheel    18M  3 Nov 19:40 mach_kernel
dr-xr-xr-x    2 root  wheel     1B 17 Mar 11:30 net
drwxr-xr-x@   3 root  admin   102B 24 Nov  2007 opt
drwxr-xr-x@   6 root  wheel   204B 31 Ago  2009 private
drwxr-xr-x@  64 root  wheel   2,1K 13 Nov 17:44 sbin
lrwxr-xr-x@   1 root  wheel    11B 31 Ago  2009 tmp -> private/tmp
drwxr-xr-x@  17 root  wheel   578B 12 Set  2009 usr
lrwxr-xr-x@   1 root  wheel    11B 31 Ago  2009 var -> private/var

Are these ownerships / permissions ok? Should I chmod/chown something?

Thanks in advance