The error was Happing on 3.4.11, in Two diferent machines. And still happens.

Just another flowup, after these WARNING, the network interface stop working utill a complete reboot.

For me 3.6.2-1.fc16.x86_64 is a lot worst than 3.4.11, now the networking interface stop working after less than 10 minutes of Up-time.
These happens on both servers.
[ 1527.517495] ------------[ cut here ]------------
[ 1527.517495] WARNING: at net/core/dev.c:3943 net_rx_action+0x1ef/0x220()
[ 1527.517495] Hardware name: To Be Filled By O.E.M.
[ 1527.517495] Modules linked in: binfmt_misc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_mangle ip6table_filter ip6_tables xt_state iptable_mangle iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 lockd 8021q garp stp llc bonding f71882fg coretemp iTCO_wdt iTCO_vendor_support microcode i2c_i801 lpc_ich mfd_core r8169 mii sunrpc i915 drm_kms_helper drm i2c_algo_bit i2c_core video
[ 1527.517495] Pid: 0, comm: swapper/0 Not tainted 3.6.2-1.fc16.x86_64 #1
[ 1527.517495] Call Trace:
[ 1527.517495]  <IRQ>  [<ffffffff8105c69f>] warn_slowpath_common+0x7f/0xc0
[ 1527.517495]  [<ffffffff8105c6fa>] warn_slowpath_null+0x1a/0x20
[ 1527.517495]  [<ffffffff8150bfdf>] net_rx_action+0x1ef/0x220
[ 1527.517495]  [<ffffffff81065388>] __do_softirq+0xc8/0x250
[ 1527.517495]  [<ffffffff8162233c>] call_softirq+0x1c/0x30
[ 1527.517495]  [<ffffffff810162a5>] do_softirq+0x65/0xa0
[ 1527.517495]  [<ffffffff810657ae>] irq_exit+0x9e/0xc0
[ 1527.517495]  [<ffffffff81622b93>] do_IRQ+0x63/0xe0
[ 1527.517495]  [<ffffffff816193aa>] common_interrupt+0x6a/0x6a
[ 1527.517495]  <EOI>  [<ffffffff813329b0>] ? intel_idle+0xf0/0x150
[ 1527.517495]  [<ffffffff8133298f>] ? intel_idle+0xcf/0x150
[ 1527.517495]  [<ffffffff814c5c39>] cpuidle_enter+0x19/0x20
[ 1527.517495]  [<ffffffff814c62cc>] cpuidle_idle_call+0xac/0x290
[ 1527.517495]  [<ffffffff8101d74f>] cpu_idle+0xcf/0x120
[ 1527.517495]  [<ffffffff815f554e>] rest_init+0x72/0x74
[ 1527.517495]  [<ffffffff81cfcc23>] start_kernel+0x3b9/0x3c6
[ 1527.517495]  [<ffffffff81cfc66a>] ? repair_env_string+0x5a/0x5a
[ 1527.517495]  [<ffffffff81cfc356>] x86_64_start_reservations+0x131/0x135
[ 1527.517495]  [<ffffffff81cfc120>] ? early_idt_handlers+0x120/0x120
[ 1527.517495]  [<ffffffff81cfc45c>] x86_64_start_kernel+0x102/0x111
[ 1527.517495] ---[ end trace 9d0203a481d69057 ]---

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