Comment 49 for bug 497299

Thanks for the replies:

You can see my /var/log/udev here: http://pastebin.com/f5b310f3d

Steve, /etc/init/network-interface.conf is not present in my system!

apt-cache policy ifupdown

ifupdown:
  Installed: 0.7~alpha3
  Candidate: 0.7~alpha3
  Version table:
 *** 0.7~alpha3 0
        100 /var/lib/dpkg/status
     0.6.8ubuntu26 0
        500 http://archive.ubuntu.com lucid/main Packages

apt-cache policy upstart

upstart:
  Installed: 0.6.3-11build1
  Candidate: 0.6.3-11build1
  Version table:
 *** 0.6.3-11build1 0
        500 http://archive.ubuntu.com lucid/main Packages
        100 /var/lib/dpkg/status