Based on what you have told us, it really does sound like something odd with your drives. A few years ago I had some crashing issues that were fixed by a firmware upgrade from Huge, so that cant be ruled out. It could also be something as silly as a bad cable or terminator to your drive array. Multiclip is more demanding, so the problem becomes pronounced when using it. I dont remember…did you say if your SCSI card on a seperate PCI bus than your KONA…it needs to be.
Most people seem to have few problems with multiclip. I get good performance with it on a system that has substantially less speed than yours using 10 bit Uncompressed. Sorry for your troubles.
PS: Are you the Paul Harb from White Crane Silat?