FWIW, there have been some bugs with regard to Adobe's activation setup. Some legal, registered users have had their applications go dead without any reason, or drop activation after other devices or programs were installed. The problems have been spotty, but nonetheless a huge pain for those affected. Adobe's latest point releases on CS2 seem to have cured most of the problems. But this activation thing has been going on since PhotoshopCS was released a couple years ago.
Not to intentionally poo on Corel, but if Adobe has had troubles getting an activation scheme to work it would be a good bet the Corel version would have its share of glitches.
Frankly, I think the activation systems do nothing more than inconvenience honest users. Lots of people all over the place have pirated versions of PhotoshopCS2 and other Adobe CS2 apps. Those hacked apps can be installed and run anywhere anytime. No "transfer activation" baloney required.