Anybody else? 2.6.18-1.2798.fc6xen kernel: BUG: soft lockup detected on CPU#1! kernel: [<c040571a>] dump_trace+0x69/0x1af kernel: [<c0405878>] show_trace_log_lvl+0x18/0x2c kernel: [<c0405e18>] show_trace+0xf/0x11 kernel: [<c0405e47>] dump_stack+0x15/0x17 kernel: [<c0441961>] softlockup_tick+0xad/0xc4 kernel: [<c0409290>] timer_interrupt+0x54b/0x593 kernel: [<c0441be6>] handle_IRQ_event+0x27/0x51 kernel: [<c0441ca6>] __do_IRQ+0x96/0xf2 kernel: [<c0406ca8>] do_IRQ+0x9e/0xbc kernel: ======================= No idea what was happening at the time that might explain this.