Here's the code from ForumUtils.vb

        Public Shared Function ConvertTimeZone(ByVal value As DateTime, ByVal ForumConfig As Forum.Config) As DateTime
            Dim displayCreatedDate As DateTime = value

            If ForumConfig.EnableTimeZone Then ' Only convert if timezone enabled for this forum...
                If HttpContext.Current.Request.IsAuthenticated Then ' ...and if user isauthenticated
                    Dim objUser As UserInfo = UserController.GetCurrentUserInfo
                    displayCreatedDate = DateAdd(DateInterval.Minute, (objUser.Profile.TimeZone - ForumConfig.TimeZone), displayCreatedDate)
                End If
            End If
            Return displayCreatedDate

        End Function

It looks like it is doing the date handling itself based on Forum Time Zone and User Time Zone.

Sorry, I lied.... inadvertantly. My portal time is set to UTC. Server time is UTC-8. Forum time is UTC-8. User time is UTC.

Thoughts?