Files with "needs-lock" property are not read-only

[te...@gmail.com]

Hi,
Files on which I have set the property "needs-lock" are not read-only.
Here are some examples of commands I have run:

% svn propset svn:needs-lock "*" filename
property 'svn:needs-lock' set on 'filename'
% svn propget svn:needs-lock filename
*
% ls -l filename
-rw-------   1 user group 10 ..... filename

When I commit the change and update from a working copy on another machine,
I see the following:
 % svn propget svn:needs-lock filename
*
% ls -l filename
-rw-------   1 user group 10 ..... filename

I don't understand why my files are still writable without being locked.
Any help is greatly appreciated.