I thought I had seen this before, but I cannot recall. All of a sudden my wife's Vista box is having "hardware interrupts" use 40% of her CPU, pretty much all the time. It's not listed in task manager ...

I have a thinkpad X61, running vista X64 Business, SP1. All relevant security updates are applied.<BR><BR>Occaisonlly I get high CPU useage. Taskmanger CPU useage graph shows approximately 40 - 50% ...