I've been recording on my G4 Imac 1gHZ using my guitar and a drum machine running through the Mbox. Everything was kosher until I just recently bought Reakor and a midi(usb) keyboard. I am able to run both at the same time but I'm having serious trouble with it crashing and am only able to record 2 or three tracks at a time. Does anyone out there know if I can upgrade my processor or maybe I should get an external hardrive? I was also thinking about trying to network another computer. I'm lost. Any help would be a ppreciated. I running OSX and have 768RAM.