Only 10 seconds?
10 seconds is good, compared with DW MX on Jaguar... 🙂
Actually it seems to be much faster now. Not as fast as it should be, but not that slow.
Macromedia points a quick finger at virus scanning software. With DW's extensibility, it has a lot of JavaScript files to build those menus, etc. Some virus scanners will scan the JS files *every time* they're opened.
If you have virus scanning software running, and can set it to ignore .js files, you might see an improvement in performance. If you can't be that selective with your virus scanner, you might try disabling it temporarily and see how it impacts speed.
I tried and the difference was perceivable, but not significant with Jaguar and DW MX. Don't have virus software running now to compare Panther and 2004.