environ-provisioner fails to start

Steps to reproduce:

1- Install MAAS Region Controller & Cloud-Controller.
2- Enlist 1 node (it can be virtual)
3- Create a user in MAAS _without_ admin access.
4- Bootstrap a Juju environment under that user.
5- wait until juju status returns something like this...

machines:
  "0":
    agent-state: pending
    dns-name: m1basic-09.vm.draco.metal.as
    instance-id: /MAAS/api/1.0/nodes/node-b275b780-3dc3-11e3-9504-525400d154c9/
    series: precise
services: {}

6- Issue juju debug-log and see many of these go by

m1basic-09:2013-10-27 00:29:08 INFO juju runner.go:245 worker: restarting "environ-provisioner" in 3s
m1basic-09:2013-10-27 00:29:11 INFO juju runner.go:253 worker: start "environ-provisioner"
m1basic-09:2013-10-27 00:29:12 INFO juju.provisioner provisioner_task.go:102 Starting up provisioner task machine-0
m1basic-09:2013-10-27 00:29:12 INFO juju.provisioner provisioner_task.go:243 machine 0 already started as instance "/MAAS/api/1.0/nodes/node-b275b780-3dc3-11e3-9504-525400d154c9/"
m1basic-09:2013-10-27 00:29:12 ERROR juju.provisioner provisioner_task.go:305 broker failed to stop instances: gomaasapi: got error back from server: 403 FORBIDDEN
m1basic-09:2013-10-27 00:29:12 ERROR juju.provisioner provisioner_task.go:120 Process machines failed: gomaasapi: got error back from server: 403 FORBIDDEN
m1basic-09:2013-10-27 00:29:12 ERROR juju.provisioner provisioner.go:132 environ provisioner died: gomaasapi: got error back from server: 403 FORBIDDEN
m1basic-09:2013-10-27 00:29:12 ERROR juju runner.go:211 worker: exited "environ-provisioner": gomaasapi: got error back from server: 403 FORBIDDEN
m1basic-09:2013-10-27 00:29:12 INFO juju runner.go:245 worker: restarting "environ-provisioner" in 3s

7- Go to MAAS User interface and grant this user admin access
8- The error stops on juju debug-log.