I assume lots of Fosstrak users are also using the LLRP Toolkit for Java that was originally developed by the Fosstrak team and contributed to the LTK project. We just released a new version of the LTK for Java that is now available from sourceforge. The new release features a number of bug fixes. See the changelog for details.
Check out this interesting presentation by Dominique Guinard where he illustrates how the Fosstrak components can be virtualized in the cloud and applications can be realized as web mashups.