deploying mysql service hang in "pending" state with lxc

I'm trying to leanr juju on a oneiric box with lxc container.

I installed juju with:

$ sudo add-apt-repository ppa:juju/pkgs
$ sudo add-apt-repository ppa:charmers/charm-helpers
$ sudo apt-get update && sudo apt-get install juju charm-tools

I insalled charm with:
$ charm getall charm-repo/oneiric

juju version is 0.5+bzr504-1juju4~oneiric1

My environment.yaml is:

##################
environments:
  lxc:
    type: local
    control-bucket: juju-ede2a53e037942e5bcfe431951dc9658
    admin-secret: c0f5b723fb2743af9771fe97d02a0698
    default-series: oneiric
    juju-origin: distro
    data-dir: /var/jujustuff
    default-instance-type: m1.large
##################

I reproduce the problem several time after destroying my environment, and bootstraping again.

When i launch a mysql service with:

$ juju deploy --repository /home/ubuntu/charm-repo/ local:mysql

It end up in a pending state (even 45mn after the deployemnt).

juju status gives:
ubuntu@jujubox-oneiric:~$ juju status
machines:
  0:
    agent-state: running
    dns-name: localhost
    instance-id: local
    instance-state: running
services:
  mysql:
    charm: local:oneiric/mysql-118
    relations: {}
    units:
      mysql/0:
        agent-state: pending
        machine: 0
        public-address: null
2012-04-02 18:03:03,767 INFO 'status' command finished successfully

juju debug-log:

ubuntu@jujubox-oneiric:~$ juju debug-log
2012-04-02 17:13:31,108 INFO Enabling distributed debug log.
2012-04-02 17:13:31,120 INFO Tailing logs - Ctrl-C to stop.
2012-04-02 17:13:53,391 Machine:0: juju.agents.machine DEBUG: Units changed old:set([]) new:set(['mysql/0'])
2012-04-02 17:13:53,391 Machine:0: juju.agents.machine DEBUG: Starting service unit: mysql/0 ...
2012-04-02 17:13:53,470 Machine:0: juju.state.unit DEBUG: Downloading charm local:oneiric/mysql-118 to /var/jujustuff/ubuntu-lxc/charms
2012-04-02 17:13:53,540 Machine:0: juju.state.unit DEBUG: Starting service unit mysql/0...
2012-04-02 17:13:53,544 Machine:0: unit.deploy DEBUG: Creating master container...
2012-04-02 17:28:34,070 Machine:0: unit.deploy DEBUG: Created master container ubuntu-lxc-0-template
2012-04-02 17:28:34,071 Machine:0: unit.deploy INFO: Creating container mysql-0...
2012-04-02 17:28:40,314 Machine:0: unit.deploy INFO: Container created for mysql/0
2012-04-02 17:28:40,331 Machine:0: unit.deploy DEBUG: Charm extracted into container
2012-04-02 17:28:40,339 Machine:0: unit.deploy DEBUG: Starting container...
2012-04-02 17:28:40,407 Machine:0: unit.deploy INFO: Started container for mysql/0
2012-04-02 17:28:40,465 Machine:0: juju.state.unit INFO: Started service unit mysql/0

The lxc vm is up as i can have access to the console with

sudo lxc-console --name ubuntu-lxc-mysql-0