conflict in packages in fedora 15

[Muayyad AlSadi]

hello,

what is the reason for this

Transaction Check Error:
  file /lib/firmware/phanfw.bin from install of
netxen-firmware-4.0.534-4.fc15.noarch conflicts with file from package
linux-firmware-20110601-1.fc15.noarch


and what requires netxen-firmware
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