I recently decided to try SpybotSD (v2.4.40.0) even though I have always preferred v1.6.2.46...
Install did a forced auto restart during the update phase causing all my open programs to crash/close on me... this is unacceptable behavior from an installer and/or update process.... without the usual prompt to restart now or later thing...

anyway getting back on topic, nothing seemed out of the ordinary at first when I did the install yesterday
but today I found Windows Explorer crashing on me consistently...

only when right-clicking on a folder in the left navigation pane would explorer.exe crash every single time...
I confirmed Spybot was the cause when I uninstalled it, restarted my PC and the crashing stopped.

the crash data also mentioned the faulty modules:
C:\Windows\system32\SHELL32.dll <<-- most of the time
C:\Windows\SYSTEM32\ntdll.dll <<-- one entry in event viewer

if the Spybot S&D devs need any further info like crash dumps just ask