As noted a few moments ago, our FogBugz On Demand Beta customers experienced an outage. It began around 4:10 PM (EST), and ended at 4:25 PM (EST).
The exact cause is unknown and is being investigated, however we believe it to be related to some recent changes in the NIC teaming configuration. All changes have been reverted to the known good config, service has been restored and verified, and we do not expect this issue to appear again.