Below is a kernel dump that I just got. This is a fresh new install of centos 5.1 on NVIDIA gigabyte MB-GA-M61P-S3. nothing extra has been added. I have not tried the irqpoll but I am surprised to get this. Also the machine keeps running just hod this show on the console... Any ideas??? Jerry Jan 8 05:20:00 localhost kernel: irq 169: nobody cared (try booting with the "irqpoll" option) Jan 8 05:20:00 localhost kernel: Jan 8 05:20:00 localhost kernel: Call Trace: Jan 8 05:20:00 localhost kernel: <IRQ> [<ffffffff800b5d77>] __report_bad_irq+0x30/0x7d Jan 8 05:20:00 localhost kernel: [<ffffffff800b5faa>] note_interrupt+0x1e6/0x227 Jan 8 05:20:00 localhost kernel: [<ffffffff800b54bc>] __do_IRQ+0xc7/0x105 Jan 8 05:20:00 localhost kernel: [<ffffffff8006a3bd>] do_IRQ+0xe7/0xf5 Jan 8 05:20:00 localhost kernel: [<ffffffff8005b615>] ret_from_intr+0x0/0xa Jan 8 05:20:00 localhost kernel: [<ffffffff80011cba>] __do_softirq+0x53/0xd5 Jan 8 05:20:00 localhost kernel: [<ffffffff801515dd>] end_msi_irq_wo_maskbit+0x9/0x16 Jan 8 05:20:00 localhost kernel: [<ffffffff8005c2fc>] call_softirq+0x1c/0x28 Jan 8 05:20:00 localhost kernel: [<ffffffff8006a53a>] do_softirq+0x2c/0x85 Jan 8 05:20:00 localhost kernel: [<ffffffff8006a3c2>] do_IRQ+0xec/0xf5 Jan 8 05:20:00 localhost kernel: [<ffffffff8005b615>] ret_from_intr+0x0/0xa Jan 8 05:20:00 localhost kernel: <EOI> [<ffffffff8000cb74>] bit_waitqueue+0x3c/0xb4 Jan 8 05:20:00 localhost kernel: [<ffffffff8002ce23>] wake_up_bit+0x11/0x22 Jan 8 05:20:00 localhost kernel: [<ffffffff880328ef>] :jbd:do_get_write_access+0x137/0x527 Jan 8 05:20:01 localhost kernel: [<ffffffff800192e9>] __getblk+0x25/0x22c Jan 8 05:20:01 localhost kernel: [<ffffffff88032d01>] :jbd:journal_get_write_access+0x22/0x33 Jan 8 05:20:01 localhost kernel: [<ffffffff8804dc75>] :ext3:ext3_reserve_inode_write+0x38/0x90 Jan 8 05:20:01 localhost kernel: [<ffffffff8804dcee>] :ext3:ext3_mark_inode_dirty+0x21/0x3c Jan 8 05:20:01 localhost kernel: [<ffffffff88050b14>] :ext3:ext3_dirty_inode+0x63/0x7b Jan 8 05:20:01 localhost kernel: [<ffffffff8001349c>] __mark_inode_dirty+0x29/0x16e Jan 8 05:20:01 localhost kernel: [<ffffffff8804b5f5>] :ext3:ext3_new_blocks+0x567/0x693 Jan 8 05:20:01 localhost kernel: [<ffffffff80025273>] __bread+0x6/0x81 Jan 8 05:20:01 localhost kernel: [<ffffffff8804e46b>] :ext3:ext3_get_blocks_handle+0x43a/0x9f1 Jan 8 05:20:01 localhost kernel: [<ffffffff88032ca8>] :jbd:do_get_write_access+0x4f0/0x527 Jan 8 05:20:01 localhost kernel: [<ffffffff8804ed42>] :ext3:ext3_get_block+0xbe/0xe3 Jan 8 05:20:01 localhost kernel: [<ffffffff8000e1b3>] __block_prepare_write+0x1b6/0x4a0 Jan 8 05:20:01 localhost kernel: [<ffffffff8804ec84>] :ext3:ext3_get_block+0x0/0xe3 Jan 8 05:20:01 localhost kernel: [<ffffffff8003c1d4>] block_prepare_write+0x1a/0x25 Jan 8 05:20:01 localhost kernel: [<ffffffff88050260>] :ext3:ext3_prepare_write+0xaf/0x17b Jan 8 05:20:01 localhost kernel: [<ffffffff8000f9cb>] generic_file_buffered_write+0x25a/0x6d8 Jan 8 05:20:01 localhost kernel: [<ffffffff8000cca5>] file_read_actor+0xb9/0x154 Jan 8 05:20:01 localhost kernel: [<ffffffff8000ddd9>] current_fs_time+0x3b/0x40 Jan 8 05:20:01 localhost kernel: [<ffffffff8000cbec>] file_read_actor+0x0/0x154 Jan 8 05:20:01 localhost kernel: [<ffffffff80015dc6>] __generic_file_aio_write_nolock+0x36c/0x3b8 Jan 8 05:20:01 localhost kernel: [<ffffffff8002134b>] generic_file_aio_write+0x65/0xc1 Jan 8 05:20:01 localhost kernel: [<ffffffff8804c192>] :ext3:ext3_file_write+0x16/0x91 Jan 8 05:20:01 localhost kernel: [<ffffffff80017958>] do_sync_write+0xc7/0x104 Jan 8 05:20:01 localhost kernel: [<ffffffff8009b492>] autoremove_wake_function+0x0/0x2e Jan 8 05:20:01 localhost kernel: [<ffffffff8000cbec>] file_read_actor+0x0/0x154 Jan 8 05:20:01 localhost kernel: [<ffffffff800161d8>] vfs_write+0xce/0x174 Jan 8 05:20:01 localhost kernel: [<ffffffff80016a8d>] sys_write+0x2d/0x6e Jan 8 05:20:01 localhost kernel: [<ffffffff80016aa5>] sys_write+0x45/0x6e Jan 8 05:20:01 localhost kernel: [<ffffffff8005b28d>] tracesys+0xd5/0xe0 Jan 8 05:20:01 localhost kernel: Jan 8 05:20:01 localhost kernel: handlers: Jan 8 05:20:01 localhost kernel: [<ffffffff801dadc4>] (usb_hcd_irq+0x0/0x55) Jan 8 05:20:01 localhost kernel: Disabling IRQ #169