OK, what just happened to my Magic Mouse?

[voodoopenguin]

I think I must have inadvertently activated something or rather deactivated as my mouse would move the pointer on the screen but no scrolling or clicking of any kind. Thought it was the mouse to begin with so tried another Magic Mouse but that was the same. I know, drag out an old USB mouse but with the same result, pointer would move but no clicking. I forced a shut down and on restarting everything is working fine so what did I do?

Paul