Stale network mounts remain after gvfs mounts are interrupted

Steps to reproduce:
* mount a network share
* Alt+F2, `pkill gvfs`

Expected results:
* network mounts disappear from nautilus

Current results
* stale network mounts remain in nautilus
* trying to unmount any of them results in an error message with "Can't unmount... The name :1.1047 was not provided by any .service files"

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: nautilus 1:3.10.1-0ubuntu8
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
NonfreeKernelModules: nvidia wl
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Mar 13 19:52:20 2014
GsettingsChanges: b'org.gnome.nautilus.list-view' b'default-column-order' b"['name', 'size', 'type', 'date_modified', 'group', 'where', 'mime_type', 'owner', 'permissions']"
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)