My new dual processor machine is unstable with Cubase SX and totally unusable with Wavelab 4.0 and Cool Edit Pro. When I try to play a wav file in wavelab 4.0 it turns into a distorted mess after about 3 seconds. Cubase SX will record and play but I get pops and clicks when I bring the Layla console up and down...or make adjustments to the output levels. Also certain plugins such as antares autotune cause glitching to the point where it's unusable. Here are the specs on the dual processor PC: AMD dual 2 gig MP processors on a Tyan Tiger MPX S2466 motherboard...I've got 2 gigs of DDR ram (ecc)in 2 slots. And I'm using the Layla 24 sound card. I've got two fast hard drives (one for applications one for data) I'm using XP pro. I have thoourghly tested the Layla 24 on my old AMD Athlon 1 gig machine and have concluded that it is working perfectly. I have been through every common trouble shooting procedure (that I could think of) with the dual processor machine...such as installing the sound card in different pci slots, taking out one stick of ram and switching slots (ruling out a bad stick of ram). And I've tunned XP pro according to the tips at musicxp.net (this didn't have an impact on the severe instability of the system). Does anyone have experience with Dual processor machines? Is there an incompatiblity with any of the hardware I'm using? Can anyone suggest a different dual processor setup that will be stable with the sound card and software I use? I also commonly use Propellerhead Reason 2.0, Acid loops, Native Instruments, Waves Plugins, etc, etc. Any help would be much appreciated.