Same thing happened to me, can't look at any pinball forums despite the fact that I spend alot of time away from home and sit in a motel room bored to tears.  I used to access the forums predominantly after hours and I also used to access my work emails at the same time so work got something out of it as well.  Now I don't bother taking my laptop with me and only check work emails about once a week when I get to the office.  The wireless connection costs them a fair bit of money and doesn't even get used anymore thanks to their stupid policy.