konqeror is not working with slide

Dear list,

I have tried to  use konqeror  with slide. I have used the webdav://  
protocol built in konqeror.
I login as user "john"  and tried to upload a file in the directory
called john under users.
But it gave error as ACL restriction. where I have logged in as john
then what is the problem to upload in john's
directory ?

please suggest; thanks