I have two P11 licenses and PP2012, PP2014 + Game Dev. I run them all across 6 computers and I've firewalled them from the internal network so I can run them at the same time without licencing issues. (sorry, if I can run blender and DS 6 times without issues, I'm not going to feel guilty for running a $500 app more times than permitted. )

But yah, again, had no issues with activation in the last three years (and more)

"The fool is not the one that does something foolish, but the one that does nothing at all."