Here is a temporary solution. Create a batch file and run it with admin privliges!
Just change the drives to your setup
64bit Windows
-------------------------------------------------------
cd "C:\Program Files (x86)\Defraggler"
df.exe c: /qd
df.exe d: /qd
df.exe e: /qd
32bit Windows
-------------------------------------------------------
cd "C:\Program Files\Defraggler"
df.exe c: /qd
df.exe d: /qd
df.exe e: /qd