I have a lot of network problems since I made the upgrade to the 11.10

In our company, We have 3 computers upgraded to the 11.10. Every one of this have network problems. The other computers are under Ubutun 11.04 ands works fine.

The network problem are not constants, sometimes after a reboot it's working. But if there are a problem I stay since a reboot.
For example we have :

• Connection troubles : streaming music does not work more than 30s, a lot of AJAX request does not work.


• Error on requesting a webpage, the browser (firefox, chromium) doesn't find the hosts


• Error often on requesting a webpage for a /etc/hosts host


• Error on ssh or scp, display the message : no root to host


• Error on svn.

We already tried :

• Desactivate IP v6


• Install Wicd instead of "Network Manager"


• Replace the /etc/resolv.conf by static data


• etc.

Is somebody have an idea ?

Thanks a lot !

See you,
Thomas.

[Edit] Add some hard ware informations

sudo lspci -nn

00:00.0 Host bridge [0600]: Intel Corporation 82P965/G965 Memory Controller Hub [8086:29a0] (rev 02)

00:01.0 PCI bridge [0604]: Intel Corporation 82P965/G965 PCI Express Root Port [8086:29a1] (rev 02)

00:02.0 VGA compatible controller [0300]: Intel Corporation 82G965 Integrated Graphics Controller [8086:29a2] (rev 02)

00:02.1 Display controller [0380]: Intel Corporation 82G965 Integrated Graphics Controller [8086:29a3] (rev 02)

00:19.0 Ethernet controller [0200]: Intel Corporation 82562V 10/100 Network Connection [8086:104c] (rev 02)

00:1a.0 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 [8086:2834] (rev 02)

00:1a.1 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 [8086:2835] (rev 02)

00:1a.7 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 [8086:283a] (rev 02)

00:1b.0 Audio device [0403]: Intel Corporation 82801H (ICH8 Family) HD Audio Controller [8086:284b] (rev 02)

00:1c.0 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 [8086:283f] (rev 02)

00:1d.0 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 [8086:2830] (rev 02)

00:1d.1 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 [8086:2831] (rev 02)

00:1d.2 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 [8086:2832] (rev 02)

00:1d.7 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 [8086:2836] (rev 02)

00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev f2)

00:1f.0 ISA bridge [0601]: Intel Corporation 82801HH (ICH8DH) LPC Interface Controller [8086:2812] (rev 02)

00:1f.2 RAID bus controller [0104]: Intel Corporation 82801 SATA RAID Controller [8086:2822] (rev 02)

00:1f.3 SMBus [0c05]: Intel Corporation 82801H (ICH8 Family) SMBus Controller [8086:283e] (rev 02)

--

sudo lshw -class network

  *-network               

       description: Ethernet interface

       product: 82562V 10/100 Network Connection

       vendor: Intel Corporation

       physical id: 19

       bus info: pci@0000:00:19.0

       logical name: eth0

       version: 02

       serial: 00:19:d1:47:e4:da

       size: 100Mbit/s

       capacity: 100Mbit/s

       width: 32 bits

       clock: 33MHz

       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation

       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=1.3.10-k2 duplex=full firmware=1.1-2 ip=192.168.2.166 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s

       resources: irq:42 memory:dfde0000-dfdfffff memory:dfddb000-dfddbfff ioport:ecc0(size=32)