I know I'm a little late to the party but I'm having the same problem...except for one thing.
EMC 9 works just fine on my Dell Dimension desktop with Norton AV, XP SP 2, and IE 7 installed. However, it fails to start on my Dell Inspiron 9400 laptop with Norton AV, XP SP 2 and IE7.
It used to work but suddenly quit about 3 months ago. I appreciate all the work that DCB did but I can't understand at all why I need to dink around with my registry to get this hog to work. Jeez, I have Java based dev environments that don't need this much coddling. Isn't there a patch from Roxio or something simple?
In the absence of anything better, I guess I'll try the reinstall method when I have 3 hours to kill.