Delete your cookies.

Ben's right though. Deleting your cookies hardly takes longer than toggling the checkbox. And to be honest, I hardly can think of a time when I would want to uncheck that option, but that's just me :)

I am playing on Steam and the button is really close to the right arrow. But after I found out that you can scroll the bench with the mouse wheel it isn't so dangerous anymore.

Lestrade, you can also quickly scroll through your crusader list by clicking on a crusader in your formation. This would remove some risk in special cases - using time warps or opening chests to gain a lot of gold and by accident spending it on levelling all crusaders instead of a specific one.

Animenut: I hear you and I agree that notifications might have their purpose. I only wanted to state these two don't have a purpose for me, specifically.

However, moving the checkboxes to the options menu could also be helpful for me since I do play the game on a browser which doesn't store cookies nor any cached data from time to time. With this, everytime I start the browser and the game, I have to uncheck both options which is not really uncomfortable.