To be able to check quickly what a UUID in Bugzilla means, I wrote a script to show some information about them. It uses data retrieved from Windows and Wine include files and registries (it finds information about more than 32000 different UUIDs). If someone is interested in it, I have put to on http://pf128.krakow.sdi.tpnet.pl/uuid.tgz . It's written in JavaScript and works under Firefox 1.5+ (it would require some small modifications to work on IE).
Mikołaj Zalewski