Have you heard of any results from CIDA (the other instrument on board stardust)?
We have to wait till next year for the sample return, but CIDA data should already be here.
The Cometary and Interstellar Dust Analyzer (CIDA) instrument intercepts dust and performs real-time compositional analysis for transmission back to Earth. The Stardust CIDA is the same instrument design that flew on Giotto and two Vega spacecraft, where it obtained unusual data on the chemical composition of individual particulates in Halley's comet. The instrument is located on the underside of the Stardust spacecraft.