I have had several hangs in which the mouse becomes non-responsive system wide. After these occur, Rhino is dead. I can among other applications but mouse is click is disabled. I can move the mouse cursor but that is it. I have to use the power button to restart.
This has occurred several times but it is not frequent. But is is an annoyance when it happens.
I have not yet identified any common function that causes the problem. It always occurs while moving the mouse in the middle of a command. I have never see it occur as the rule of executing a command.
I know these are nearly impossible to diagnose at this level of information but I thought I would get it out there. Maybe others can fill in the blanks.