Launching more than 2 files from nemo triggers hourglass for 15s

[Bib]

Hi

In raring with Unity and nemo 1.7.2 installed from App Center and set as the system file manager*, launching a second file (or a third one and so on) for the same application, e.g. txt files to gedit or pictures to eye of gnome image viewer 3.6.2, will trigger a busy/hourglass cursor for 15s.
This also happens when I launch right-click the nemo icon to launch a quicklist item to a home subfolder.
This won't happen when files are opened from terminal or Alt+F2.
This won't happen when 2 or more pdf files are launched from nemo to evince.

Searching info on this I discovered I also have the same old cursor issue triggered when opening a second file in gedit, which is said to be fixed, maybe only for nautilus??? I can't decide.
(see https://bugs.launchpad.net/ubuntu/+source/gedit/+bug/792227 )

*with this command:
xdg-mime default nemo.desktop inode/directory application/x-gnome-saved-search

The tweaked ~/.local/share/applications/nemo.desktop file:
[Desktop Entry]
Icon=folder_home
StartupNotify=false
Exec=nemo %U
X-GNOME-Bugzilla-Version=1.7.2
Comment[fr]=Accéder aux fichiers et les organiser
Type=Application
Categories=GNOME;GTK;Utility;Core;
Comment=Access and organize files
Terminal=false
X-GNOME-Bugzilla-Product=nemo
Actions=Action0;Action1;Action2;Action3
MimeType=inode/directory;application/x-gnome-saved-search;
Name=Files
X-GNOME-Bugzilla-Bugzilla=GNOME
X-GNOME-Bugzilla-Component=general
OnlyShowIn=GNOME;Unity;
Name[fr]=Fichiers

[Desktop Action Action2]
Exec=nemo Images
Name=Images
Name[fr_FR]=Images

[Desktop Action Action0]
Exec=nemo Musique
Name=Musique
Name[fr_FR]=Musique

[Desktop Action Action1]
Exec=nemo Documents
Name=Documents
Name[fr_FR]=Documents

[Desktop Action Action3]
Exec=nemo Vidéos
Name=Vidéos
Name[fr_FR]=Vidéos

I'm not really sure if the nemo quicklist and gedit both triggering the busy cursor for exactly 15s are related.