------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x213/0x220()
Hardware name: System Name
NETDEV WATCHDOG: eth0 (sis900): transmit queue 0 timed out
Modules linked in: binfmt_misc snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer ppdev snd_seq_device ns558 snd parport_pc gameport psmouse soundcore i2c_sis96x shpchp sis_agp snd_page_alloc serio_raw lp parport usb_storage uas sis900 btrfs zlib_deflate libcrc32c
Pid: 2133, comm: firefox-bin Tainted: G   M        2.6.38-5-generic #32-Ubuntu
Call Trace:
 [<c104fa42>] ? warn_slowpath_common+0x72/0xa0
 [<c1449d53>] ? dev_watchdog+0x213/0x220
 [<c1449d53>] ? dev_watchdog+0x213/0x220
 [<c104fb13>] ? warn_slowpath_fmt+0x33/0x40
 [<c1449d53>] ? dev_watchdog+0x213/0x220
 [<c1069221>] ? __queue_work+0xe1/0x360
 [<c1079acb>] ? clocksource_watchdog+0x2b/0x260
 [<c105c7cb>] ? call_timer_fn+0x2b/0xe0
 [<c15092cd>] ? _raw_spin_lock+0xd/0x10
 [<c1449b40>] ? dev_watchdog+0x0/0x220
 [<c105db09>] ? run_timer_softirq+0xe9/0x1e0
 [<c1449b40>] ? dev_watchdog+0x0/0x220
 [<c10566a2>] ? __do_softirq+0x82/0x170
 [<c1056620>] ? __do_softirq+0x0/0x170
 <IRQ>  [<c105686d>] ? irq_exit+0x6d/0x80
 [<c151038b>] ? smp_apic_timer_interrupt+0x5b/0x8a
 [<c1509b79>] ? apic_timer_interrupt+0x31/0x38
 [<c1500000>] ? early_init_intel+0xf7/0x130
---[ end trace 24dcba6cdb367f6b ]---