Hi all, Just bought a Seagate Barracuda 200 GB SATA to replace a dead ATA. Managed to salvage my audio thankfully. Got artefacts in the recorded tracks when using it with CubaseSX. Loud regular crackles whose period varies with the buffer size. i.e at 32k it crackles twice a second (ish) and at 256k it crackles about once every two seconds. Seems the SATA is struggling to play back my existing tracks and causing this noise. But it does it with only 2 tracks. I've moved my M-Audio card around the slots, seperated the SATA disk from the case to rule out proximity noise. Downloaded powerstrip and altered PCI latency times for the SATA controller and the Audio card. No change for better or worse. Can't help thinking its my onboard SATA controller (NForce2 chipset mobo). Was fine with my ATA. Using XP SP2, AMD 3200+ 1GB Corsair XMS Pro, M-Audio Delta-44 @ 24/96 Anyone any ideas? thanks Mark.