It seems that this bug also affects Ubuntu 10.10. $ uname -a Linux ubuntu 2.6.35-22-generic #34-Ubuntu SMP Sun Oct 10 09:24:00 UTC 2010 i686 GNU/Linux This is the output from /var/log/messages : Oct 14 18:07:14 ubuntu kernel: [ 77.054544] lo: Disabled Privacy Extensions Oct 14 18:13:49 ubuntu kernel: [ 471.919115] lo: Disabled Privacy Extensions Oct 14 18:19:40 ubuntu kernel: [ 823.004036] ------------[ cut here ]------------ Oct 14 18:19:40 ubuntu kernel: [ 823.004058] WARNING: at /build/buildd/linux-2.6.35/net/sched/sch_generic.c:258 dev_watchdog+0x1fd/0x210() Oct 14 18:19:40 ubuntu kernel: [ 823.004063] Hardware name: KT600-8237 Oct 14 18:19:40 ubuntu kernel: [ 823.004065] NETDEV WATCHDOG: eth0 (via-rhine): transmit queue 0 timed out Oct 14 18:19:40 ubuntu kernel: [ 823.004068] Modules linked in: binfmt_misc snd_via82xx gameport snd_ac97_codec radeon ac97_bus xfs snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi ttm snd_seq_midi_event exportfs snd_seq drm_kms_helper snd_timer snd_seq_device uvcvideo ppdev drm snd videodev psmouse v4l1_compat via_agp i2c_viapro soundcore serio_raw i2c_algo_bit parport_pc shpchp agpgart lp parport via_rhine floppy pata_via sata_via mii Oct 14 18:19:40 ubuntu kernel: [ 823.004116] Pid: 0, comm: swapper Not tainted 2.6.35-22-generic #34-Ubuntu Oct 14 18:19:40 ubuntu kernel: [ 823.004119] Call Trace: Oct 14 18:19:40 ubuntu kernel: [ 823.004134] [] warn_slowpath_common+0x72/0xa0 Oct 14 18:19:40 ubuntu kernel: [ 823.004140] [] ? dev_watchdog+0x1fd/0x210 Oct 14 18:19:40 ubuntu kernel: [ 823.004145] [] ? dev_watchdog+0x1fd/0x210 Oct 14 18:19:40 ubuntu kernel: [ 823.004151] [] warn_slowpath_fmt+0x33/0x40 Oct 14 18:19:40 ubuntu kernel: [ 823.004156] [] dev_watchdog+0x1fd/0x210 Oct 14 18:19:40 ubuntu kernel: [ 823.004163] [] ? tick_program_event+0x2e/0x40 Oct 14 18:19:40 ubuntu kernel: [ 823.004169] [] ? hrtimer_interrupt+0x1ae/0x2a0 Oct 14 18:19:40 ubuntu kernel: [ 823.004174] [] ? dev_watchdog+0x0/0x210 Oct 14 18:19:40 ubuntu kernel: [ 823.004180] [] call_timer_fn+0x2f/0xf0 Oct 14 18:19:40 ubuntu kernel: [ 823.004185] [] run_timer_softirq+0x104/0x210 Oct 14 18:19:40 ubuntu kernel: [ 823.004191] [] ? tick_handle_oneshot_broadcast+0x12c/0x140 Oct 14 18:19:40 ubuntu kernel: [ 823.004196] [] ? dev_watchdog+0x0/0x210 Oct 14 18:19:40 ubuntu kernel: [ 823.004204] [] __do_softirq+0x9c/0x1b0 Oct 14 18:19:40 ubuntu kernel: [ 823.004212] [] ? handle_IRQ_event+0x44/0x150 Oct 14 18:19:40 ubuntu kernel: [ 823.004217] [] ? irq_to_desc+0x14/0x20 Oct 14 18:19:40 ubuntu kernel: [ 823.004223] [] ? move_native_irq+0x19/0x50 Oct 14 18:19:40 ubuntu kernel: [ 823.004228] [] do_softirq+0x45/0x50 Oct 14 18:19:40 ubuntu kernel: [ 823.004233] [] irq_exit+0x65/0x70 Oct 14 18:19:40 ubuntu kernel: [ 823.004239] [] do_IRQ+0x55/0xc0 Oct 14 18:19:40 ubuntu kernel: [ 823.004245] [] ? sched_clock_local+0xa4/0x180 Oct 14 18:19:40 ubuntu kernel: [ 823.004251] [] common_interrupt+0x30/0x38 Oct 14 18:19:40 ubuntu kernel: [ 823.004262] [] ? acpi_idle_enter_simple+0xf4/0x12d Oct 14 18:19:40 ubuntu kernel: [ 823.004271] [] cpuidle_idle_call+0x7a/0x100 Oct 14 18:19:40 ubuntu kernel: [ 823.004276] [] cpu_idle+0x8c/0xd0 Oct 14 18:19:40 ubuntu kernel: [ 823.004282] [] rest_init+0x71/0x80 Oct 14 18:19:40 ubuntu kernel: [ 823.004290] [] start_kernel+0x36e/0x374 Oct 14 18:19:40 ubuntu kernel: [ 823.004295] [] ? pass_all_bootoptions+0x0/0xa Oct 14 18:19:40 ubuntu kernel: [ 823.004300] [] i386_start_kernel+0xd7/0xdf Oct 14 18:19:40 ubuntu kernel: [ 823.004304] ---[ end trace 178065f67c52b3fa ]--- Oct 14 18:19:40 ubuntu kernel: [ 823.004449] eth0: Transmit timed out, status 0000, PHY status 786d, resetting... Oct 14 18:19:40 ubuntu kernel: [ 823.005147] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1