SVN detects deleted files

[Giulio Troccoli]

Recently I have starting experiencing something I always thought not 
possible in Subversion.

I work on Ubuntu with SVN 1.6.12. If I move or delete a file using the 
OS Subverision marks the file as deleted rather than missing.

$ rm foo.php
$ svn st
D       foo.php

while I was expecting

$ svn st
!       foo.php

Has this been introduced in 1.6.12? Is there a way to "switch it off" ?

Thanks
Giulio