I got the following kernel errors hundreds of time, in two different sessions: Jun 4 21:51:56 ws1 kernel: do_IRQ: 1.193 No irq handler for vector Jun 4 21:51:58 ws1 last message repeated 9 times Jun 4 21:52:01 ws1 kernel: printk: 1425102 messages suppressed. Jun 4 21:52:04 ws1 kernel: do_IRQ: 1.193 No irq handler for vector Jun 4 21:52:06 ws1 kernel: printk: 1451665 messages suppressed. Jun 4 21:52:07 ws1 kernel: do_IRQ: 1.193 No irq handler for vector Jun 4 21:52:11 ws1 kernel: printk: 1453851 messages suppressed. Jun 4 21:52:13 ws1 kernel: do_IRQ: 1.193 No irq handler for vector Jun 4 21:52:16 ws1 kernel: printk: 1414477 messages suppressed. kernel = 2.6.21-1.3194.fc7 The first time I was running Amarok and copying from a directory containing 8GB to a local directory (GB LAN). I'd see above messages interspersed among the verbose output of cp. When this started to happen Amarok started to "chatter" and my USB mouse got real slow to respond. PS2 mouse worked fine. The second time I was also running Amarok, and I was attempting to burn an ISO image to a DVD. Amarock started to "chatter" and this time, the PS2 mouse failed and I could just barely cause the USB mouse to cause a shutdown. Hardware is dual Opteron 244 CPUs on an MSI K8T Master FAR motherboard, 2GB RAM. Machine works fine on F6 kernels. I found references to these log file entries for 2.18 and 2.19 kernels, but found nothing for my current kernel... Thanks!
