In Oct. 2009 a bhikkhuni ordination took place in Australia which was headed by Ven. Ajahn Brahm. The ordination ritual was criticized by Ven. Thanissaro claiming the invalidity of the ordination due to formal flaws. Even in case there have been some minor mistakes according to the Pali Vinaya, Ven. Bhikkhu Bodhi rejects the invalidity.

• You can follow the debate here:
  groups.google.com/group/dhammadharini/web/responses-to-ajahn-thanissaros-concerns-on-bhikkhuni-ordination-validity
  Please send your comments and responses to Ayya Tathaaloka, Email: tathaaloka@msn.com who will bundle them and send them to Thailand.
  Thank you all for your concern and support.
• For further information:
  www.supportbhikkhunis.org
• Women and the Forest Sangha group on Facebook - no need to log in or even be a member. This site is collecting many of the updates incl. newspaper articles, letters and responses
  www.facebook.com/group.php?gid=153235999615&ref=nf
• History in the Making?
  gobeyondwords.wordpress.com/2009/11/03/history-in-the-making/
• On Sunday 1 November at Wat Pah Pong (the head monastery of the Ajahn Chah tradition) Ajahn Brahm and his monastery Bodhinyana were formally expelled from Wat Pah Pong for performing bhikkhuni ordination.
  www.santifm.org
• Bangkok Post online 28/04/2009: The bhikkhuni question
  Re-examining conventional wisdom on the issue of bhikkhunis in the Theravada Buddhist tradition