I never noticed this, but during the configuration of HA in my testlab I received some weird errors. I just could not enable it on the ESX Server that ran ESX 3i, and I’m pretty sure DNS works fine. Today I received an email about 3i and support on HA, which states:
Support for VMware High Availability (HA) is experimental and expected to be fully supported in an upcoming patch or update.
You can read more about it in this PDF about 3i and HA. But is it me or is almost every single interesting new feature experimental. I hope that VMware will support all the new features when the patches/updates are released