A couple possible solutions exist for this:Reduce the Disk Cache in the Apple Memory Control Panel to 512k and restart the computer.Close all unnecessary windows such as Plug-Ins and the Big Counter before proceeding with a Bounce To Disk.Allocate more preferred memory to the Pro Tools LE and DAE applications. Click on the icon once to highlight it and choose File>Get Info in the Finder (shortcut: Command+I). Increase the DAE Preferred size to 70000k (70MB) and Pro Tools LE to 60000k (60MB). Never change the Minimum memory size. If you have, reset DAE Minimum size to 30000k and Pro Tools Minimum to 35320k.