Wierd Error I never got before? Please help

2011-11-13 11:40:50 [SEVERE] java.net.SocketException: Too many open files
2011-11-13 11:40:50 [SEVERE] at java.net.PlainSocketImpl.socketAccept(Native Method)
2011-11-13 11:40:50 [SEVERE] at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:408)
2011-11-13 11:40:50 [SEVERE] at java.net.ServerSocket.implAccept(ServerSocket.java:462)
2011-11-13 11:40:50 [SEVERE] at java.net.ServerSocket.accept(ServerSocket.java:430)
2011-11-13 11:40:50 [SEVERE] at net.minecraft.server.NetworkAcceptThread.run(SourceFile:35)

Getting this error Cb# 1337 I need help quick please!
It randomly spams console!

 

Try disabling all plugins and restarting the server, see if it still happens. If not, you know it's one of your plugins, which you can then start moving back in one-by-one until you find the one that's causing it.