Blender Git Loki

2.5/Sculpt:

Improved sculpting in perspective mode; starting a stroke on the background would sometimes result in the brush having a huge effect on the mesh. Fixed by waiting to start the stroke until the mouse moves over the model.

The fix is not quite perfect, because detection of the edge of the model is based on the depth buffer, so other things that change the depth buffer, like the grid and axis lines in the 3d view, can throw off the calculation.