EINVAL at Stream.setNoDelay

[novemberborn]

This stack trace was logged overnight after an automatic reconnect, hope it points at something useful:

28 Dec 07:38:58 - Client 159272015793249 disconnected
28 Dec 07:39:23 - Initializing client with transport "websocket"

net:923
    setNoDelay(this.fd, v);
                   ^
Error: EINVAL, Invalid argument
    at Stream.setNoDelay (net:923:20)
    at [object Object]._onConnect (/Users/sysop/wow/local/lib/node/.npm/socket.io/0.6.3/package/lib/socket.io/transports/websocket.js:86:19)
    at [object Object].<anonymous> (/Users/sysop/wow/local/lib/node/.npm/socket.io/0.6.3/package/lib/socket.io/client.js:23:8)
    at new <anonymous> (/Users/sysop/wow/local/lib/node/.npm/socket.io/0.6.3/package/lib/socket.io/transports/websocket.js:9:10)
    at [object Object]._onConnection (/Users/sysop/wow/local/lib/node/.npm/socket.io/0.6.3/package/lib/socket.io/listener.js:165:74)
    at [object Object].check (/Users/sysop/wow/local/lib/node/.npm/socket.io/0.6.3/package/lib/socket.io/listener.js:84:12)
    at Server.<anonymous> (/Users/sysop/wow/local/lib/node/.npm/socket.io/0.6.3/package/lib/socket.io/listener.js:40:15)
    at Server.emit (events:41:20)
    at Stream.<anonymous> (http:778:14)
    at IOWatcher.callback (net:494:2