Came across an interesting error in error log with Nginx 0.8.30 with WinXP Pro SP2 causing all php/mysql scripts to hang and not load pages ?

2009/12/22 22:37:45 [notice] 2468#1464: WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER, WSAID_TRANSMITPACKETS) failed (10022: An invalid argument was supplied)
2009/12/22 22:37:45 [notice] 2468#1464: WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER, WSAID_DISCONNECTEX) failed (10022: An invalid argument was supplied)
2009/12/22 22:37:46 [notice] 3412#1816: WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER, WSAID_TRANSMITPACKETS) failed (10022: An invalid argument was supplied)
2009/12/22 22:37:46 [notice] 3412#1816: WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER, WSAID_DISCONNECTEX) failed (10022: An invalid argument was supplied)

Any ideas ?