"Too many open files" in websocket-transport

websocket-transport stopped accepting connections after a while:

2013-04-01 13:27:56 error copying WebSocket to ORPort
2013-04-01 13:27:57 error copying WebSocket to ORPort
2013-04-01 13:28:33 Failed to connect to ORPort: dial tcp 127.0.0.1:5555: too many open files
2013-04-01 13:28:34 Failed to connect to ORPort: dial tcp 127.0.0.1:5555: too many open files
2013-04-01 13:28:45 Failed to connect to ORPort: dial tcp 127.0.0.1:5555: too many open files
2013-04-01 13:28:45 Failed to connect to ORPort: dial tcp 127.0.0.1:5555: too many open files
2013-04-01 13:28:45 Failed to connect to ORPort: dial tcp 127.0.0.1:5555: too many open files
2013-04-01 13:29:11 error copying WebSocket to ORPort
2013-04-01 13:29:43 error copying WebSocket to ORPort

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information