We experienced some downtime today between 10am and 11:30am PST. For this period access to users accounts and polls were intermittently disabled. A scheduled backup of our database caused a key file to become corrupt and it took over an hour to recover and restore our dataset. We did this without any data being lost. We apologize for this interruption of service and will be working on our backup plan over the next 72 hours to try and make sure this cannot happen again. If you have any questions or concerns relating to this issue you can contact us directly.