I am a user of Rhino in MAC OS in the lastest version.
I have found serious problem ( too much memory consumption) during using.
My RAM is 16GB actually, and whenever I use Rhino in my Laptop,
When I draw lines and zoom in or out in the application, my left memory is fluctuated from 20mb to 7, 8 Gmb.
It is really unstable and sometimes Rhino is frozen or shutdown. It happens sometime when I only use Rhino in my work.
Please check this issue : )
PS: I have this problem from that when I downloaded previous updated version.