The ISS repeater will be in V/U mode through January 17, according to http://www.southgatearc.org/news/january2009/ariss_anniversary_update.htm .
I just had a 20 degree pass and it was really loud, far louder than anything I've ever heard from AO-51 or any other bird. Quite a lot of activity, I worked 6Y5RA, N4QWZ, YV5MM, and KG4ZLB. Called N2EHG (good signal) several times but no answer.
Note that this is NOT the usual ISS repeater configuration (used to be 70cm uplink, 2 meter downlink). The downlink is now on 437.8, and the uplink is on 145.99 (67hz PL tone needed).
73, Bill NZ5N