There was a new Ubuntu partial upgrade so I did it, nautilus UI is a different, but the problem persists, the temporary solution is to kill nautilus with pkill command then to launch nautilus with "--no-desktop" argument.
And when I launch nautilus within the terminal, the errors are more precise : "Initializing nautilus-gdu extension Initializing nautilus-open-terminal extension ** Message: Initializing gksu extension... (nautilus:10040): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed (nautilus:10040): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed Nautilus-Share-Message: Called "net usershare info" but it failed: « net usershare » a retourné l'erreur 255 : net usershare: cannot open usershare directory /var/lib/samba/usershares. Error Aucun fichier ou dossier de ce type Please ask your system administrator to enable user sharing. Exception en point flottant " -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to nautilus in ubuntu. https://bugs.launchpad.net/bugs/705276 Title: nautilus blink continiously -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs