Network disconnection on lenny

[Victor Guedes <vguedes@bottincarto.com>]

Hi,

I installed debian lenny, and now i have disconnection problems (ssh, 
xdmcp, pgadmin,....)
It isn't disconnection because inactivity.

my config :
- Dell R410 (intel Xeon E5504, 4Go ram)
- install lenny 5.0.3 version i386
- kernel linux 2.6.30-bpo.1-686 (upgrade needed because installation of 
network card firmware
- network card NetXtremeII BCM5716 (firmware-bnx2 - 0.17-bpo50+1)

Basic Test :
From my workstation, I connect to the server with putty. Then, I 
launched a ping on my workstation. I do the same thing with a seesion 
opened on the server.
After 10 minutes, putty displays the message "Network error: Software 
caused connection abort". At same moment, the ping launched from the 
session opened on the server stop. And after 30 seconds, the ping 
continues and I'm able to reconnect with putty.
When i do a netstat, the tcp connection is present.


Could somebody help me ?

Thank

PS : sorry for my basic english