Hi Bob, I tasted this wine on 17th May and here's my notes.
Yalumba 'Y' Series Viognier 2005
Waikarei (Riverlands area), South Australia
Light bright gold in colour, it seemed a little muted at first but opened up well with citrus blossoms and apricot on the nose. I found it to be quite a crisp, phenolic style with alcoholic heat, a citrus spiciness, lemon butter lollies and a slightly toffee-ish orange-liqueur (Curacao) flavour character to the finish. Medium to full-bodied, by the end of the glass it was actually quite more-ish as a drink. 14.5% alc. Screwcap closure. NZ$14.95, which is about US$9 and CAN$10 at todays rates.
Definitely didn't experience the sulphur that you did, although this could be what muted the wine at first. My wine was not chilled, although it was late autumn in May, so outside temps pretty low compared to what you would be getting right now.