domain roaming profiles on vista

I can not get Vista Beta 2 to log in using a domain roaming profile. It
authenticates the user correctly with the Win Server '03 domain, however, I
get the message stating that it couldn't load the roaming profile and instead
logged me in with a temp profile. This happens for all domain users on my AD
on the Vista box, but all work fine on XP SP2 and Win Server '03. I even
tried creating a new domain user and dumping a local acct's profile from
Vista to be its roaming profile, but still no luck. I have seen many similar
posts on here, but no solutions. Btw, yes, the folders do have the correct
permissions (otherwise they wouldn't work on any box) and the AD's DNS server
is listed as the primary DNS server on the Vista box. Any help (or a public
release of a fix ) would be greatly appreciated.

Thanks,
RossB