CNUSB-611

Hi,
  I've got CNUSB-611 Wi-Fi plugged into linux 2.4.25. I'd tried=20
at76c503-0.11 and atmelwlandriver-3.2.4.4.
At first I was trying at76c503-0.11 and it was working for a while. And=20
then hung
Now I am trying atmelwlandriver-3.2.4.4 and after some MB sents via wifi=20
it hungs. In logs I see:

May  7 08:40:21 demon kernel: stopping the net queue
May  7 08:40:21 demon kernel: waking up the net queue
May  7 08:40:21 demon kernel: stopping the net queue
May  7 08:40:21 demon kernel: waking up the net queue
May  7 08:40:21 demon kernel: stopping the net queue
May  7 08:40:21 demon kernel: waking up the net queue
May  7 08:40:22 demon kernel: stopping the net queue
May  7 08:40:22 demon kernel: waking up the net queue
May  7 08:40:23 demon kernel: stopping the net queue
May  7 08:40:23 demon kernel: waking up the net queue
May  7 08:40:23 demon kernel: stopping the net queue
May  7 08:40:23 demon kernel: waking up the net queue
May  7 08:40:23 demon kernel: stopping the net queue
May  7 08:40:23 demon kernel: waking up the net queue
May  7 08:40:23 demon kernel: stopping the net queue
May  7 08:40:23 demon kernel: waking up the net queue
May  7 08:40:23 demon kernel: stopping the net queue
May  7 08:40:23 demon kernel: waking up the net queue
May  7 08:40:44 demon kernel: stopping the net queue

[Then I try to remove plug from usb CNUSB-611 and I recieve:]

May  7 08:49:51 demon kernel: hub.c: port 1, portstatus 100, change 0, 12=
=20
Mb/s
May  7 08:49:51 demon kernel: hub.c: port 2, portstatus 100, change 0, 12=
=20
Mb/s
May  7 08:49:51 demon kernel: hub.c: port 3, portstatus 100, change 1, 12=
=20
Mb/s
May  7 08:49:51 demon kernel: hub.c: port 3 connection change
May  7 08:49:51 demon kernel: hub.c: port 3, portstatus 100, change 1, 12=
=20
Mb/s
May  7 08:49:51 demon kernel: usb.c: USB disconnect on device 00:0b.0-1.3=
=20
address 4
May  7 08:49:51 demon kernel:  device eth2 module usbvnetr
May  7 08:49:51 demon kernel: freeing all pending tx packets
May  7 08:49:51 demon kernel: stopping the net queue
May  7 08:49:51 demon kernel: tx packet c1956fe0 dropped
May  7 08:49:51 demon kernel: Unable to handle kernel NULL pointer=20
dereference at virtual address 00000004
May  7 08:49:51 demon kernel:  printing eip:
May  7 08:49:51 demon kernel: c706360a
May  7 08:49:51 demon kernel: *pde =3D 00000000
May  7 08:49:51 demon kernel: Oops: 0000
May  7 08:49:51 demon kernel: CPU:    0
May  7 08:49:51 demon kernel: EIP:    0010:[<c706360a>]    Not tainted
May  7 08:49:51 demon kernel: EFLAGS: 00010203
May  7 08:49:51 demon kernel: eax: 00000055   ebx: c2330000   ecx:=20
c1956000   edx: 00000054
May  7 08:49:51 demon kernel: esi: 00000000   edi: 00000000   ebp:=20
c2330000   esp: c1185edc
May  7 08:49:51 demon kernel: ds: 0018   es: 0018   ss: 0018
May  7 08:49:51 demon kernel: Process khubd (pid: 8, stackpage=3Dc1185000=
)
May  7 08:49:51 demon kernel: Stack: c2330000 00000246 c7066f00 00000000=20
c031f320 00000246 c0112c17 c1184000
May  7 08:49:51 demon kernel:        c235af60 c7066f00 00000000 c705cc49=20
c2330000 c584aa00 c7063ef0 00000246
May  7 08:49:51 demon kernel:        c7066ee0 c235af60 c031f339 00000246=20
c7064332 c7064341 c7063ef0 00000000
May  7 08:49:51 demon kernel: Call Trace:    [<c7066f00>] [printk+255/276=
]=20
[<c7066f00>] [<c705cc49>] [<c7063ef0>]
May  7 08:49:51 demon kernel:   [<c7066ee0>] [<c7064332>] [<c7064341>]=20
[<c7063ef0>] [usb_disconnect+60/300] [usb_disconnect+142/300]
May  7 08:49:51 demon kernel:   [usb_hub_port_connect_change+144/620]=20
[usb_hub_events+342/704] [usb_hub_thread+53/180] [arch_kernel_thread+40/5=
6]
May  7 08:49:51 demon kernel:
May  7 08:49:51 demon kernel: Code: 8b 56 04 8b 06 89 50 04 89 02 c7 06 0=
0=20
00 00 00 c7 46 04 00
May  7 08:50:32 demon kernel: usb.c: USB disconnect on device 00:0b.0-0=20
address 1
May  7 08:50:32 demon kernel: usb.c: USB disconnect on device 00:0b.0-1=20
address 2

Do You have any idea what is a root problem (usb hub or CNUSB-611 or=20
driver/firmware)?

--
Pawe=B3 Latkowski