System Information
Operating system and graphics card
Snow Leopard 10.6.8 AMD Radeon 6970 M
Blender Version
Broken: (example: 2.69.7 4b206af, see splash screen)
Worked: (optional) 2.70
Short description of error
Hot Z, Blender crashes.
PieMenu off Z is OK.
Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps
Hit Z after splashscreen goes.