I have the same problem. I just updated today to 1.17, but I was previously running 1.13 and had the same problem there. I did notice that in 1.17 it does not freeze until I click somewhere within the program window, whereas 1.13 would just freeze whether I clicked or not. Debug file attache
It also takes forever for the program to stop defragging, and the program would usually freeze when I click Stop during a defrag.
Defraggler.exe._1_17_172__2010_03_04_11_35_.txt