This is with Feisty not in Gusty like Donal (Bug reporter).

After a few Oops I got that:

Dec 19 06:09:02 mars kernel: [   39.710293] BUG: soft lockup detected on CPU#2!
Dec 19 06:09:02 mars kernel: [   39.710315]  [softlockup_tick+156/240] softlockup_tick+0x9c/0xf0
Dec 19 06:09:02 mars kernel: [   39.710333]  [pdflush+0/512] pdflush+0x0/0x200
Dec 19 06:09:02 mars kernel: [   39.710338]  [update_process_times+51/128] update_process_times+0x33/0x80
Dec 19 06:09:02 mars kernel: [   39.710349]  [smp_apic_timer_interrupt+112/128] smp_apic_timer_interrupt+0x70/0x80
Dec 19 06:09:02 mars kernel: [   39.710358]  [apic_timer_interrupt+40/48] apic_timer_interrupt+0x28/0x30
Dec 19 06:09:02 mars kernel: [   39.710369]  [pdflush+0/512] pdflush+0x0/0x200
Dec 19 06:09:02 mars kernel: [   39.710380]  [_spin_lock+7/16] _spin_lock+0x7/0x10
Dec 19 06:09:02 mars kernel: [   39.710390]  [sync_supers+12/192] sync_supers+0xc/0xc0
Dec 19 06:09:02 mars kernel: [   39.710398]  [wb_kupdate+36/240] wb_kupdate+0x24/0xf0
Dec 19 06:09:02 mars kernel: [   39.710412]  [pdflush+294/512] pdflush+0x126/0x200
Dec 19 06:09:02 mars kernel: [   39.710421]  [wb_kupdate+0/240] wb_kupdate+0x0/0xf0
Dec 19 06:09:02 mars kernel: [   39.710431]  [kthread+186/240] kthread+0xba/0xf0
Dec 19 06:09:02 mars kernel: [   39.710439]  [kthread+0/240] kthread+0x0/0xf0
Dec 19 06:09:02 mars kernel: [   39.710447]  [kernel_thread_helper+7/16] kernel_thread_helper+0x7/0x10
Dec 19 06:09:02 mars kernel: [   39.710457]  =======================
Dec 19 06:09:03 mars kernel: [   40.714061] BUG: soft lockup detected on CPU#0!
Dec 19 06:09:03 mars kernel: [   40.714082]  [softlockup_tick+156/240] softlockup_tick+0x9c/0xf0
Dec 19 06:09:03 mars kernel: [   40.714100]  [update_process_times+51/128] update_process_times+0x33/0x80
Dec 19 06:09:03 mars kernel: [   40.714112]  [smp_apic_timer_interrupt+112/128] smp_apic_timer_interrupt+0x70/0x80
Dec 19 06:09:03 mars kernel: [   40.714122]  [apic_timer_interrupt+40/48] apic_timer_interrupt+0x28/0x30
Dec 19 06:09:03 mars kernel: [   40.714134]  [_spin_lock+10/16] _spin_lock+0xa/0x10
Dec 19 06:09:03 mars kernel: [   40.714141]  [get_super+25/176] get_super+0x19/0xb0
Dec 19 06:09:03 mars kernel: [   40.714149]  [__invalidate_device+23/80] __invalidate_device+0x17/0x50
Dec 19 06:09:03 mars kernel: [   40.714157]  [check_disk_change+55/128] check_disk_change+0x37/0x80
Dec 19 06:09:03 mars kernel: [   40.714159]  [class_device_get+14/32] class_device_get+0xe/0x20
Dec 19 06:09:03 mars kernel: [   40.714169]  [<f891463f>] sd_open+0xaf/0x150 [sd_mod]
Dec 19 06:09:03 mars kernel: [   40.714175]  [exact_match+0/16] exact_match+0x0/0x10
Dec 19 06:09:03 mars kernel: [   40.714181]  [blkdev_open+0/112] blkdev_open+0x0/0x70
Dec 19 06:09:03 mars kernel: [   40.714185]  [do_open+123/656] do_open+0x7b/0x290
Dec 19 06:09:03 mars kernel: [   40.714195]  [blkdev_open+0/112] blkdev_open+0x0/0x70
Dec 19 06:09:03 mars kernel: [   40.714199]  [blkdev_open+48/112] blkdev_open+0x30/0x70
Dec 19 06:09:03 mars kernel: [   40.714205]  [__dentry_open+186/448] __dentry_open+0xba/0x1c0
Dec 19 06:09:03 mars kernel: [   40.714215]  [nameidata_to_filp+53/64] nameidata_to_filp+0x35/0x40
Dec 19 06:09:03 mars kernel: [   40.714222]  [do_filp_open+80/96] do_filp_open+0x50/0x60
Dec 19 06:09:03 mars kernel: [   40.714235]  [do_sys_open+78/240] do_sys_open+0x4e/0xf0
Dec 19 06:09:03 mars kernel: [   40.714243]  [sys_open+28/32] sys_open+0x1c/0x20
Dec 19 06:09:03 mars kernel: [   40.714248]  [sysenter_past_esp+105/169] sysenter_past_esp+0x69/0xa9
Dec 19 06:09:03 mars kernel: [   40.714260]  =======================