Are you aware that CS5 was released at the end of April?
If you just purchased CS4 a couple of weeks ago, you should be eligible for a free upgrade to CS5.
True but it won't run on a non Intel G5 which, unfortunately, is what I have.
Two OS's back on a nearly obsolete processor.
No offense intended. Dont get me wrong. I have times when I really wish I had my PPC again.
I never got beyond CS3 on my PPC G5. It wasn't for lack of resources, I had 2Gb of RAM, and 500Gb of HD, but when I went from Studio 8 (Macromedia) to CS3 I saw things just like you describe and it wasn't only DW. Photoshop, Acrobat and Illustrator were all just crashes looking for a place to happen.
When I got my Intel Mac, I put CS4 on it and it runs fine. I've just put CS5 on and it seems to be OK too. I'd never think of installing either on a PPC.
Most of the things you describe are "throughput" functions. In otherwords, they require changes on the input and output channels of your processor. Something that the Core Duo has greatly improved. A single core PPC just can't do all that, especially with multiple apps open and running.
I guess that answers it. Bummer.
Still on a 1 year old MacBook Pro running Snow Leopard its not a whole lot better.
Anyway, thanks for the explanation.