It hasn't been a year since Cuba lifted the ban on PCs for the majority of its citizens, and now it looks like ou neighbor to the south has been giving some serious thought to the implications of open source operating systems. To this end, the nation has recently announced Nova -- its own Linux variant -- at a conference on technological sovereignty in Havana. Not only does the nation see reliance on Microsoft Windows a security threat, but the U.S. trade embargo makes it virtually impossible for folks on the island to get the software legally. According to Hector Rodriguez of Cuba's University of Information Sciences, about