[BRLTTY] error during brltty startup

[Marion Peterreins]

Hi all,

Since I've updated my ubuntu 10.4 I have the following problem:
When I start my computer brltty is started but there are only strange 
dots on my braille display.
In the syslog viewer I found a couple of errors related to brltty:

Feb  2 17:11:39 mari-laptop brltty[1930]: USB configuration set error 
16: Device or resource busy.
Feb  2 17:11:39 mari-laptop kernel: [  131.094871] usb 6-2: usbfs: 
interface 0 claimed by ftdi_sio while 'brltty' sets config #1
Feb  2 17:11:39 mari-laptop brltty[1930]: USB interface in use: 0 (ftdi_sio)

When I unplug my braille display and write:
killall brltty
and plug it in again and start brltty all works fine.

braille display = braillex els 40 (Papenmeier)
brltty 4.1
brlapi 0.5.4

Do you have an idea what the problem is and how to tackle it?

Best wishes, Marion!