Addendum:

>> how did Jens and Thore come to be in possession of unauthorised sources for MUI,
>> who supplied the sources?

> See link in comment #129 (as written in comment #175) for the story as told by a
> MorphOS team member.

Another different version of the story (based on early MUI4.0, sources provided by Stuntzi):

http://translate.google.com/translate?sl=de&tl=en&u=http://www.a1k.org/forum/showpost.php?p=974487