fxp0 device timeout in 4.9 and system hang

[sn]

Hi 
 I have install 4.9 in my ibm 330 x-series with 4 
  intel pro 100 ethernet card build in ,along with
  adaptec 7892 utra 160 scsi adapter ,
  yesterday while try to browsing the net using opera
 the whole system hang there ,and I force to ctrl+alt+
 backspace to exit the xwindows , the message fxp0
timeout came out and the whole fbsd system just hang
there . 
 sn

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