Radiotap error

"Valerio, Danilo" <[email protected]> Mon, 07 Aug 2006 19:05:32 +0200
Newsgroups gmane.network.ethereal.user
Message-ID <[email protected]>
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Hi *.*,
I'm using ethereal since some months, now I changed my wireless card 
(from prism to intel ipw2200)...
I have a problem when i try to capture in monitor mode...
I'm able to capture every frame perfectly with tcpdump, but when i try 
to do it by ethereal i got this message:

"arptype 803 not supported by libpcap - falling back to cooked socket."

Isn't strange that libpcap does it with tcpdump and fails with ethereal?

Many, many thanks if you can help me...

regards,
Danilo