--- /tmp/55NetworkManager	2013-05-26 18:21:58.678074918 +0200
+++ 55NetworkManager	2013-05-26 18:34:40.000000000 +0200
@@ -10,13 +10,19 @@
 
 suspend_nm()
 {
-	# Tell NetworkManager to shut down networking
-        printf "Having NetworkManager put all interfaces to sleep..."
-	dbus_send --system                         \
-		--dest=org.freedesktop.NetworkManager  \
-		/org/freedesktop/NetworkManager        \
-		org.freedesktop.NetworkManager.Sleep boolean:true && \
-	    echo Done. || echo Failed.
+        # Only shut down networking if we are not using NFS
+        # (otherwise we stall during "sync" on suspend).
+	if [ -z "$(findmnt --noheadings --type nfs4 --type nfs)" ]; then
+	    # Tell NetworkManager to shut down networking
+            printf "Having NetworkManager put all interfaces to sleep..."
+	    dbus_send --system                         \
+	            --dest=org.freedesktop.NetworkManager  \
+		    /org/freedesktop/NetworkManager        \
+		    org.freedesktop.NetworkManager.Sleep boolean:true && \
+	        echo Done. || echo Failed.
+        else
+		echo "Not shuting down interfaces, because of network file systems."
+	fi
 }
 
 resume_nm()