Hi I'm helping one of my colleages do some research for a follow up to this article on 3G VoIP being slowed:
 
http://www.consumer.org.nz/newsitem.asp?docid=2624&category=News&topic=ISPs%20able%20to%20slow%20down%20VoIP%20services
 
Anyone know about VoIP packets being slowed on either Telecom or Vodafones 3G networks?