Network's freezing

[Fourat Zouari]

Am having network problems with ubuntu on my laptop, the computer freezes
when downloading or uploading a big file (over 500Mb) via scp or ftp to/form
other computers in the network, other symptoms is that it freezes when
executing tcpdump at shell console.
Any one can help ?

here's my lspci output :
--------------------------------------------
0000:02:04.0 Ethernet controller: Atheros Communications, Inc.: Unknown
device 001a (rev 01)
0000:02:06.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus
Controller (rev 02)
0000:02:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)
0000:02:0a.0 FireWire (IEEE 1394): Texas Instruments TSB43AB21
IEEE-1394a-2000 Controller (PHY/Link)
--------------------------------------------

I have 2 network adapters, eth and wifi.
How to know wich hardware is used as eth0 and ath0 (wifi)
Why is it saying 'Unknown device' ? lan and wifi are working fine.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20060511/793c9210/attachment.html>