Folks, Here's a simple SMI detector we've been playing around with internally. In case anyone wants to play with it, and especially help clean it up :) SMI events are particularly unhelpful on Real Time systems because we effectively have the CPU stolen from under us. We can't prevent this easily without BIOS vendors/system vendor co-operation, but we can help to diagnose and log that these are occuring...which can be very helpful too. Cheers, Jon.