I found this post on the ubuntu forum: http://ubuntuforums.org/showthread.php?t=1232886.

But let's try other thing, do this;

sudo -i

then go to /homeand do ll

you will see something like this:

:/home# ll

total 4

drwxr-xr-x  6 root    root     128 2012-01-31 09:26 ./

drwxr-xr-x 25 root    root     704 2012-02-13 07:31 ../

drwxr-xr-x 81 marcelo marcelo 3008 2012-02-20 20:08 marcelo/

drwxr-xr-x 20 test    test     784 2012-01-31 13:10 test/

you us what you see in yours.

in mine there are 2 users: marcelo (me) and test (for other reasons).
inside your folder do ll again and let's see how is the owner o that folder.

you can do (as root) chown user folder/ and chgrp group folder/

In my case to change the folder /test to me and my group "marcelo" is this way:

chown marcelo test/

chgrp marcelo test/

Hope it could be helpful.