Eh it's not so much my boss not expecting much as my boss not knowing what the hell I do/how much of it I should be getting done on a daily basis.
I work in IT Support, and there obviously aren't always IT issues, so in down time I'm supposed to update our records system. Before I started slacking I'd say I was probably atleast 3x more productive than I am now.
I guess I'd have to say I'm addicted, but then again my job is really boring as I said and the other women that work here are really boring to talk to. Added to that, the only other IT person is a guy that is never on-site so I can't talk to him about tech-ish stuff.