I somewhat confused about Salamander_2.5 When closing Salamander it always saves its configuration to the registry... and this consumes in comparison to Salamander_2.0 distinctly more time

Deselecting 'save configuration on exit' within the menu 'options - configuration - general' is only valid for the running instance of Salamander. When opening and closing it once more, it again saves its configuration automatically.
Am I doing something wrong? Currently I still have installed and running Salamander 2.0 in parallel.
Espacially when experimenting with the configuration of Salamander - for example when setting window colours -, it's sometimes very helpfull not automatically to save the messed configuration to the registry.
Best regards and many thanks for your suggestions in advance!