I'm experiencing the same as chaders and ejeans. I just downloaded the most current version of LW Pro, hoping that would help. I'm using a Mac Powerbook G4 1.67ghz, Mac OS 10.4.10, Apple's built-in firewall on, 1Gb ram, >300Gb disk space, broadband connection. Does anyone know of specific software conflicts with particular "protection" programs, eg norton for Mac, etc? I had an earlier version (don't remember #) that worked great, but also don't remember if I loaded some software later that might conflict. If that's a possibility, not sure where to start checking.