I downloaded all three versions of UpYours we have in our archieves, checked them with AVG, McAfee and Tauscan... nothing...
While it is true that most of the software in the archieves is malicious, even illegal if used improperly, I am under the impression that UpYours just does what it's supposed to do. Could you tell me what trojan you found it infected with? Since that file has been in the archieves for a couple of years already, any virus/trojan horse-scanner should pick it up...
Soo... if you found something, let me know what, and what scanner picked it up