Virtualbox update

I have praised virtualbox in earlier posts, it is a good replacement for vmware. But, maybe no more . In general I am a Sun supporter, used the in the 80's when they were truly great. They have now (well as of february '08) taken over virtualbox and released a new version 1.6. Great I thought, until it broke my networking. I was using host networking for running win2k ver ubuntu 7.10, and there seems to be no way to run except as nat. Grrrrr.