I've moved to Glasgow University.
My collection of suspension modeling software now has a more permanent home on the LIGO E2E Group's website.
Please update your bookmarks from
http://www.ligo.caltech.edu/~mbarton/SUSmodels/
to
http://www.ligo.caltech.edu/~e2e/SUSmodels/
Cheers,
Mark Barton
m DOT barton AT physics DOT gla DOT ac DOT uk