I'm experiencing popping at the end of regions. After using other Pro Tools systems I'm aware this shouldn't happen. What have I missed out in the setup of my system. I'm using a O2R going to a ADAT bridge then G4 450 into Pro Tools 5.1 then out through a ATTO Dual SCSI port into a Seagate Cheetha drive. The popping occurs when cutting up regions. If you can help with any suggestions I would be thankful.