'net usershare' returned error 255

[listofx]

Hi,

I want to share a directory to friends. I do remember that it has once
worked before in nautilus just by right-clicking on a directory.

but now, it prompts:

>         'net usershare' returned error 255: net usershare: cannot open
>         usershare directory /var/lib/samba/usershares. Error
>         Permission denied
>         You do not have permission to create a usershare. Ask your
>         administrator to grant you permissions to create a share.
>         

ls -ld /var/lib/samba/usershares told me
>         drwxrwx--T 2 root haldaemon 4096 2010-07-21 21:12 usershares/

I consider the group haldaemon is highly suspicious since it is located
after user 'upload' (see below) I created for uploading. see vipw below.
Who created this user?

>         xiang:x:1000:1000:Xiang Liu,,,,:/home/xiang:/bin/bash
>         privoxy:x:114:65534::/etc/privoxy:/bin/false
>         ftp:x:1001:65534::/home/ftp:/bin/false
>         upload:x:1002:65534::/home/upload:/bin/false
>         haldaemon:x:115:121:Hardware abstraction layer,,,:/var/run/hald:/bin/false

There is also a group called haldaemon in my system. (the last line in /etc/group)
>         haldaemon:x:121:

I have tried to find other files or directories owned by haldaemon with
intention to finally find out a package which causes a new user
haldaemon. Utilizing command 'find', I did not obtain any valuable
results.

>         xiang at xiang-laptop:/$ sudo find ./ -group haldaemon -print
>         ./proc/1927
>         ./proc/1927/task
>         ./proc/1927/task/1927
>         ./proc/1927/task/1927/attr
>         ./proc/1927/task/1929
>         ./proc/1927/task/1929/attr
>         ./proc/1927/net
>         ./proc/1927/attr
>         ./proc/1969
>         ./proc/1969/task
>         ./proc/1969/task/1969
>         ./proc/1969/task/1969/attr
>         ./proc/1969/net
>         ./proc/1969/attr
>         find: ‘./proc/4520/task/4520/fd/5’: No such file or directory
>         find: ‘./proc/4520/task/4520/fdinfo/5’: No such file or directory
>         find: ‘./proc/4520/fd/5’: No such file or directory
>         find: ‘./proc/4520/fdinfo/5’: No such file or directory
>         ./var/lib/samba/usershares

>         xiang at xiang-laptop:/$ sudo find ./ -user haldaemon -print
>         ./proc/1927
>         ./proc/1927/task
>         ./proc/1927/task/1927
>         ./proc/1927/task/1927/attr
>         ./proc/1927/task/1929
>         ./proc/1927/task/1929/attr
>         ./proc/1927/net
>         ./proc/1927/attr
>         ./proc/1969
>         ./proc/1969/task
>         ./proc/1969/task/1969
>         ./proc/1969/task/1969/attr
>         ./proc/1969/net
>         ./proc/1969/attr
>         find: ‘./proc/4554/task/4554/fd/5’: No such file or directory
>         find: ‘./proc/4554/task/4554/fdinfo/5’: No such file or directory
>         find: ‘./proc/4554/fd/5’: No such file or directory
>         find: ‘./proc/4554/fdinfo/5’: No such file or directory
>         

help needed.

Best Regards,
xiang