While there isn't a single "folklore" story about this specific version, the "interesting story" of Adobe Acrobat XI Pro (11.0)
Because XI Pro was the last version you could "own" forever, its serial numbers became legendary in the software world for a few reasons: The "Zombie" Activations : Even though Adobe officially ended support for XI Pro on October 15, 2017 Adobe Acrobat Xi Pro 11.0 20 Serial Number
: Because the activation servers are offline, even a valid serial number may fail to activate on a new machine. While there isn't a single "folklore" story about