Nautilus 2.24.0 doesn't update folder contents

[Peter Ulrich Kruppa]

Hello,

when I copy a file via ftp or samba on my Desktop or somewhere in 
my home directory this won't be visible in Nautilus or on my 
Desktop until I press the update button.
I am quite sure this worked automatically within 1 or 2 seconds 
with older versions of nautilus.

Is this a bug or some kind of setup mistake?

Greetings,

Uli.