From owner-freebsd-usb@FreeBSD.ORG  Fri Nov 20 08:37:01 2009
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Date: Fri, 20 Nov 2009 11:11:52 +0300
From: Maxim Giryaev <gem@parallels.com>
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Subject: Re: [madwimax] madwimax-0.1.1 patch for FreeBSD 8 (very buggy)
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I create similar patch, you can see it here: 
http://code.google.com/p/madwimax/issues/detail?id=39
Periodical crashes in libusb triggered by sigchild handler in madwimax.
I check to way to fix it:
1. remove sigchild handler and call wait3() in scan_loop()
2. check for NULL result of  libusb20_tr_get_priv_sc1() inside  lubusb.

Second way fixes crashes but periodically  libusb_submit_trasfer() 
returns error 99.

There are no disconnects from Internet on my router during last week.

-- 

Maxim Giryaev