I am the current president of Gamma Phi Fraternity at Duquesne University. As of my freshman year, 2004, the Gammas, Kaps, and Lambs were the only local groups on campus, so I'm not positive what happened to the other groups, but I can give you this...
Sigma Lamdba Phi sorority lost their charter in Spring '05. Most of the Lambs joined the national Sigma Kappa, the newest greek organization on campus, I dont even know if they officially recieved their charter yet, or if they're still a colony.
The Kaps had their charter suspended in Spring '05, but it is only a 4 year suspension and we REALLY hope they can come back from it.
So as of right now, the Gammas are the only local group on campus, still going strong as the oldest greek lettered organization on campus, founded in 1916.
www.greeklife.duq.edu