[BRLTTY] Error messages with startup 4.0

[Charlene Root]

Hi ALL,
I just installed brltty 4.0 on my machine.
I'm running CentOS 5.3 with aAlva satellite 584.
I get some error messages in my var/log/messages that I don't understand.
It works fine BTW.
Here are the messages, hopefully someone can explain them:
May 21 13:42:26 adrianvb brltty[11504]: BRLTTY 4.0 [http://mielke.cc/brltty/]
May 21 13:42:26 adrianvb brltty[11505]: Linux Screen Driver:
May 21 13:42:26 adrianvb brltty[11505]: BrlAPI Server: release 0.5.3
May 21 13:42:26 adrianvb brltty[11505]: USBFS open error: /dev/bus/usb/002/009: No such file or directory
May 21 13:42:26 adrianvb brltty[11505]: USB device open error 2: No such file or directory.
May 21 13:42:26 adrianvb brltty[11505]: USBFS open error: /dev/bus/usb/002/008: No such file or directory
May 21 13:42:26 adrianvb brltty[11505]: USB device open error 2: No such file or directory.
May 21 13:42:26 adrianvb brltty[11505]: USBFS open error: /dev/bus/usb/002/007: No such file or directory
May 21 13:42:26 adrianvb brltty[11505]: USB device open error 2: No such file or directory.
May 21 13:42:26 adrianvb brltty[11505]: USBFS open error: /dev/bus/usb/002/004: No such file or directory
May 21 13:42:26 adrianvb brltty[11505]: USB device open error 2: No such file or directory.
May 21 13:42:26 adrianvb brltty[11505]: Ignored Byte: 0D
May 21 13:42:26 adrianvb brltty[11505]: Alva Braille Driver: version 2.2
May 21 13:42:30 adrianvb brltty[11505]: Alva Speech Driver:
-- 
	Adrian P. van Bloois
Postbus 2575                 email:   adrian at accu.uu.nl
3500 GN  Utrecht             voice:   +31-30-68-94649
The Netherlands              fax:     ++31-30-68-94601

The whole point of cooking is to get as much flavour out of the
ingredients as possible.
	-- Delia SMith