Comment 4 for bug 573919

Same problem here: NFS disk mounted via autofs does not mount since upgrade to lucid.

Besides, when trying to stop/restart the service, I encounter the following result:
$ service autofs restart
restart: Rejected send message, 1 matched rules; type="method_call", sender=":1.64" (uid=1000 pid=32756 comm="restart) interface="com.ubuntu.Upstart0_6.Job" member="Restart" error name="(unset)" requested_reply=0 destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init"))

No workaround so far...