renaming .desktop files adds .desktop automaticly

[Leo Unglaub]

Hi friends,
if you create a .desktop config file and try renaming them, nautilus always adds the .desktop even if i delete it.
An example: foobar.desktop is a valid .desktop file. I an going to rename the file to foobar and press enter. Nautilus renames the file to foobar.desktop. If i rename it to new-foobar.desktop nautilus will rename the file to new-foobar.desktop.desktop.

Some informations:
leo@galactica:~$ lsb_release -rd
Description: Ubuntu 11.10
Release: 11.10

leo@galactica:~$ uname -a
Linux galactica 3.0.0-13-generic #21-Ubuntu SMP Mon Oct 17 20:18:51 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

leo@galactica:~$ dpkg -l nautilus* | grep ii
ii nautilus 1:3.2.1-0ubuntu2 file manager and graphical shell for GNOME
ii nautilus-data 1:3.2.1-0ubuntu2 data files for nautilus
ii nautilus-dropbox 0.6.8-1 Dropbox integration for Nautilus
ii nautilus-open-terminal 0.19-1build1 nautilus plugin for opening terminals in arbitrary paths
ii nautilus-sendto 3.0.1-0ubuntu1 integrates Evolution and Pidgin into the Nautilus file manager
ii nautilus-share 0.7.3-1ubuntu1 Nautilus extension to share folder using Samba

Greetings
Leo