Network crash in F13

[Clodoaldo Neto]

Whenever a heavy nfs4 file copy or internet file download is done
connectivity is lost and restarting NetworkManager does not fix it.
Only a reboot fixes it.

------------[ cut here ]------------
WARNING: at net/sched/sch_generic.c:255 dev_watchdog+0xf0/0x192()
Hardware name: A780GM-A
NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out
Modules linked in: nfs lockd fscache nfs_acl auth_rpcgss nls_utf8 fuse
vboxnetadp vboxnetflt vboxdrv sunrpc cpufreq_ondemand powernow_k8
freq_table ip6t_REJECT nf_conntrack_ipv6 ip6table_filter ip6_tables
ipv6 uinput snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep
snd_seq snd_seq_device snd_pcm joydev nvidia(P) snd_timer i2c_piix4
snd soundcore i2c_core serio_raw edac_core r8169 mii k10temp
snd_page_alloc edac_mce_amd microcode raid1 ata_generic pata_acpi
usb_storage pata_atiixp [last unloaded: scsi_wait_scan]
Pid: 0, comm: swapper Tainted: P           2.6.33.4-95.fc13.x86_64 #1
Call Trace:
<IRQ>  [<ffffffff8104b558>] warn_slowpath_common+0x77/0x8f
[<ffffffff8104b5bd>] warn_slowpath_fmt+0x3c/0x3e
[<ffffffff8139cd43>] ? netif_tx_lock+0x3f/0x68
[<ffffffff8139ce5c>] dev_watchdog+0xf0/0x192
[<ffffffff8106956d>] ? sched_clock_local+0x1c/0x82
[<ffffffff8106117c>] ? __queue_work+0x35/0x3c
[<ffffffff810583d6>] run_timer_softirq+0x1ba/0x25e
[<ffffffff8106c299>] ? ktime_get+0x60/0xb9
[<ffffffff810516c5>] __do_softirq+0xe0/0x1a1
[<ffffffff810702d8>] ? tick_program_event+0x25/0x27
[<ffffffff8100aa1c>] call_softirq+0x1c/0x30
[<ffffffff8100c21d>] do_softirq+0x41/0x7e
[<ffffffff81051518>] irq_exit+0x36/0x78
[<ffffffff81020234>] smp_apic_timer_interrupt+0x89/0x97
[<ffffffff8100a4d3>] apic_timer_interrupt+0x13/0x20
<EOI>  [<ffffffff81028384>] ? native_safe_halt+0x6/0x8
[<ffffffff8101117a>] default_idle+0x31/0x4e
[<ffffffff81008bfd>] cpu_idle+0xa5/0xdf
[<ffffffff81423bf6>] start_secondary+0x1f2/0x233

This same hardware was working with Fedora 10

Regards, Clodoaldo Pinto Neto