[9:19pm] Response times on commons.gc.cuny.edu and related sites are currently very slow. The team is investigating.
[9:58pm] The Commons should now be responding normally. The outages were due to networkwide issues at the Graduate Center, which have been cleared up.
The Commons is currently experiencing SSL configuration issues that are making it impossible to log into the site or visit HTTPS pages without receiving browser security warnings. The Commons team and GC IT are looking into the problem. Stay tuned to this space for updates.
UPDATE (2016-10-24 10:46am EDT): IT has resolved this issue. Logins and other SSL pages should be loading properly.