Squeeze 5.0.4 is an excellent Mac product with a few caveats. The earlier Squeeze Compression 3 Pro was intuitive although a bit slow, whereas this update takes a bit more time to understand. However their email help is excellent, I must say. Also, the Help menu function [ so far ] doesn't work but rather you have to go into the application's directory folder to actually get to the Adobe Reader Squeeze Help. Once you have opened up the Squeeze Help with Adobe Reader, it's more about Quick Keys and shortcuts as I remember than about a quick and intuitive set of instructions in order to get Squeeze up and running. However, once up and running, Squeeze 5.0.4 is super fast, works beautifully, and, to repeat, their email feedback help is truly excellent. Best of everything to the folks at Squeeze! Don Saar, drdonzi@crocker.com, Relativity Calculator, www.relativitycalculator.com PS: Squeeze 5.0.4 with their On2 VP6 codec plugin does excellent, excellent quality outputs,at tremendously fast speeds, and cuts down the "meg weight" to about half (1/2) of what the earlier Squeeze Compression 3 Pro accomplished.