Kaspersky simply re-ticks its own box as the Apply button is pressed
Interesting...must be some sort of counter-measure they've got going to fight against those viruses that try to disable anti-virus.
I'm guessing there must be a preference setting somewhere in the Kaspersky software that would enable you to disable the behaviour without having to resort to uninstalling. If I get a chance later I'll do a bit of digging around.