@Benjamim Gois I had the same nautilus error as you (which seems different from the subject of this bug report). In my case the UbuntuOne client was screwing up DBus somehow. Removing the client immediately fixed the problem:
sudo apt-get remove ubuntuone-client -- 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/724285 Title: assertion failure: g_bus_unwatch_name: assertion `watcher_id > 0' failed -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
