Win7 64 bit, 16 GB RAM, an AMD 7xxx GPU, third gen i7 processor
Broken: hash 254282c
Worked: hash 83a36b2 (buildbot build done 4th of September)
Short description of error
Force movement is now behaving like LinV as opposed to actual force, could've been an error introduced when cleaning or pasting code
Exact steps for others to reproduce the error
Open the .blend and press 'P'.